diff --git a/apps/app-router-example/app/funnel.tsx b/apps/app-router-example/app/funnel.tsx
index 3310c2f..5f70124 100644
--- a/apps/app-router-example/app/funnel.tsx
+++ b/apps/app-router-example/app/funnel.tsx
@@ -1,23 +1,11 @@
 "use client";
 
 import { useFunnel } from "@xionhub/funnel-app-router-adapter";
-import { funnelOptions } from "@xionhub/funnel-core";
 import { overlay } from "overlay-kit";
-import { useEffect } from "react";
-
-const EXAMPLE_FUNNEL_ID = "hello-this-is-funnel-id";
-const exampleFunnelOptions = funnelOptions({
-  steps: ["a", "b", "c"],
-  funnelId: EXAMPLE_FUNNEL_ID,
-});
+import { exampleFunnelOptions } from "~/src/example-funnel";
 
 export default function ExampleFunnel() {
-  const [Funnel, controller] = useFunnel(exampleFunnelOptions);
-
-  // biome-ignore lint/correctness/useExhaustiveDependencies: <explanation>
-  useEffect(() => {
-    controller.onStepChange("a");
-  }, []);
+  const [Funnel, controller] = useFunnel(exampleFunnelOptions());
 
   return (
     <div className=" px-4 py-4">
@@ -35,7 +23,7 @@ export default function ExampleFunnel() {
               await new Promise((res) => setTimeout(res, 1000));
               return false;
             }}
-            onFunnelRestrictEvent={async () => {
+            onRestrict={async () => {
               await overlay.openAsync(({ close, unmount }) => (
                 <div>
                   <div>접근할 수 없는 상태에요</div>
@@ -43,6 +31,7 @@ export default function ExampleFunnel() {
                     type="button"
                     onClick={() => {
                       close(true);
+                      unmount();
                     }}
                   >
                     처음 화면으로 돌아가기
diff --git a/apps/app-router-example/app/funnel/page.tsx b/apps/app-router-example/app/funnel/page.tsx
new file mode 100644
index 0000000..c8dacac
--- /dev/null
+++ b/apps/app-router-example/app/funnel/page.tsx
@@ -0,0 +1,12 @@
+import { Suspense } from "react";
+import ExampleFunnel from "../funnel";
+
+export default function Page() {
+  return (
+    <div>
+      <Suspense>
+        <ExampleFunnel />
+      </Suspense>
+    </div>
+  );
+}
diff --git a/apps/app-router-example/app/page.tsx b/apps/app-router-example/app/page.tsx
index e07d29e..663f7e4 100644
--- a/apps/app-router-example/app/page.tsx
+++ b/apps/app-router-example/app/page.tsx
@@ -1,12 +1,13 @@
-import { Suspense } from "react";
-import ExampleFunnel from "./funnel";
+"use client";
+import { FunnelClient } from "@xionhub/funnel-core";
+import Link from "next/link";
+import { exampleFunnelOptions } from "~/src/example-funnel";
 
 export default function Home() {
+  const funnelClient = new FunnelClient(exampleFunnelOptions());
   return (
     <div>
-      <Suspense>
-        <ExampleFunnel />
-      </Suspense>
+      <Link href={`/funnel${funnelClient.createStep("a")}`}>퍼널로 이동하기</Link>
     </div>
   );
 }
diff --git a/apps/app-router-example/src/example-funnel.ts b/apps/app-router-example/src/example-funnel.ts
new file mode 100644
index 0000000..37a93a2
--- /dev/null
+++ b/apps/app-router-example/src/example-funnel.ts
@@ -0,0 +1,8 @@
+import { FunnelClient, funnelOptions } from "@xionhub/funnel-core";
+
+const EXAMPLE_FUNNEL_ID = "hello-this-is-funnel-id";
+export const exampleFunnelOptions = () =>
+  funnelOptions({
+    steps: ["a", "b", "c"] as const,
+    funnelId: EXAMPLE_FUNNEL_ID,
+  });
diff --git a/packages/funnel-app-router-adapter/src/external/use-funnel-app-router-adapter.tsx b/packages/funnel-app-router-adapter/src/external/use-funnel-app-router-adapter.tsx
index 046dfb0..a8259be 100644
--- a/packages/funnel-app-router-adapter/src/external/use-funnel-app-router-adapter.tsx
+++ b/packages/funnel-app-router-adapter/src/external/use-funnel-app-router-adapter.tsx
@@ -1,31 +1,42 @@
 import {
-  DEFAULT_FUNNEL_STEP_ID,
-  type FunnelAdapterReturnType,
+  type CreateFunnelStepFunction,
+  FunnelClient,
   type FunnelOptions,
+  type FunnelStepChangeFunction,
   type NonEmptyArray,
-  funnelQs,
   useCoreFunnel,
 } from "@xionhub/funnel-core";
-import { useRouter, useSearchParams } from "next/navigation";
+import { usePathname, useRouter, useSearchParams } from "next/navigation";
 
 export const useFunnelAppRouterAdapter = <Steps extends NonEmptyArray<string>>(
   options: Omit<FunnelOptions<Steps>, "step">,
-): FunnelAdapterReturnType<Steps> => {
-  const funnelId = options?.funnelId ?? DEFAULT_FUNNEL_STEP_ID;
+) => {
+  const funnelId = options.funnelId;
   const router = useRouter();
-
-  const queryStep = useSearchParams().get(funnelId);
+  const searchParams = useSearchParams();
+  const queryStep = searchParams.get(funnelId);
+  const funnelClient = new FunnelClient(options);
+  const pathname = usePathname();
   const step = (queryStep ?? undefined) as Steps[number] | undefined;
   const [Funnel, controller] = useCoreFunnel({ ...options, step });
 
-  const onStepChange: FunnelAdapterReturnType<Steps>["1"]["onStepChange"] = (newStep, options) => {
+  const createFunnelStep: CreateFunnelStepFunction<Steps> = (step, options) => {
+    if (!options?.searchParams) {
+      return { [funnelId]: step };
+    }
+    const allQueryString = funnelClient.getQueryString(options?.searchParams);
+
     const deleteKeyList = Array.isArray(options?.deleteQueryParams)
       ? options?.deleteQueryParams
       : ([options?.deleteQueryParams].filter(Boolean) as string[]);
 
-    const value = funnelQs.updateFunnelQs({ [funnelId]: newStep }, deleteKeyList);
+    const stepObject = funnelClient.createStepObject(step, funnelClient.deleteStep(allQueryString, deleteKeyList));
+    return stepObject;
+  };
 
-    const newUrl = `${funnelQs.getPathName()}${value}`;
+  const onStepChange: FunnelStepChangeFunction<Steps> = (newStep, options) => {
+    const stepObject = createFunnelStep(newStep, { ...options, searchParams });
+    const newUrl = `${pathname}${funnelClient.stringifyStep(stepObject)}`;
 
     if (options?.type === "replace") {
       return router.replace(newUrl);
@@ -38,5 +49,5 @@ export const useFunnelAppRouterAdapter = <Steps extends NonEmptyArray<string>>(
     return router.push(newUrl);
   };
 
-  return [Funnel, { ...controller, onStepChange }] as const;
+  return [Funnel, { ...controller, onStepChange, createFunnelStep }] as const;
 };
diff --git a/packages/funnel-core/src/external/constant.ts b/packages/funnel-core/src/external/constant.ts
deleted file mode 100644
index d350a8a..0000000
--- a/packages/funnel-core/src/external/constant.ts
+++ /dev/null
@@ -1 +0,0 @@
-export const DEFAULT_FUNNEL_STEP_ID = "step";
diff --git a/packages/funnel-core/src/external/external-utils.ts b/packages/funnel-core/src/external/external-utils.ts
index 8b862f6..c2bfa6d 100644
--- a/packages/funnel-core/src/external/external-utils.ts
+++ b/packages/funnel-core/src/external/external-utils.ts
@@ -1,4 +1,4 @@
-import { DEFAULT_FUNNEL_STEP_ID } from "./constant";
+import qs from "qs";
 import type { FunnelOptions, NonEmptyArray } from "./types";
 
 export const funnelOptions = <T extends NonEmptyArray<string>>(props: FunnelOptions<T>): FunnelOptions<T> => props;
@@ -8,12 +8,42 @@ export class FunnelClient<T extends NonEmptyArray<string>> {
   steps: T;
 
   constructor(props: FunnelOptions<T>) {
-    this.funnelId = props.funnelId ?? DEFAULT_FUNNEL_STEP_ID;
+    this.funnelId = props.funnelId;
     this.steps = props.steps;
   }
 
-  createFunnelStep(value: T[number]) {
-    const funnelId = this.funnelId ?? DEFAULT_FUNNEL_STEP_ID;
-    return `${funnelId}=${value}` as const;
+  createStep(value: T[number], context?: Record<string, unknown>) {
+    return this.stringifyStep(this.createStepObject(value, context));
+  }
+
+  getQueryString<T extends Record<string, unknown>>(searchParams: URLSearchParams) {
+    const result = {} as Record<string, unknown>;
+    searchParams.forEach((value, key) => {
+      result[key] = value;
+    });
+    return result as T;
+  }
+
+  createStepObject(value: T[number], context?: Record<string, unknown>) {
+    return { ...context, [this.funnelId]: value } as const;
+  }
+
+  // biome-ignore lint/suspicious/noExplicitAny: <explanation>
+  deleteStep<T extends Record<string, any>, K extends keyof T>(obj: T, keys: K[]): Omit<T, K> {
+    const result = { ...obj };
+
+    for (const key of keys) {
+      delete result[key];
+    }
+
+    return result as Omit<T, K>;
+  }
+
+  stringifyStep(context: Record<string, unknown>) {
+    return qs.stringify(context, { addQueryPrefix: true });
+  }
+
+  parseQueryString<T>(queryString: string) {
+    return qs.parse(queryString, { ignoreQueryPrefix: true }) as T;
   }
 }
diff --git a/packages/funnel-core/src/external/guard.tsx b/packages/funnel-core/src/external/guard.tsx
index c57438b..31acb45 100644
--- a/packages/funnel-core/src/external/guard.tsx
+++ b/packages/funnel-core/src/external/guard.tsx
@@ -2,7 +2,7 @@
 import { useEffect, useRef, useState } from "react";
 import type { GuardProps } from "./types";
 
-export const Guard = ({ condition, children, fallback, onFunnelRestrictEvent }: GuardProps) => {
+export const Guard = ({ condition, children, fallback, onRestrict }: GuardProps) => {
   const [isRender, setIsRender] = useState(false);
   const isOnce = useRef(true);
   const canImmediateRender =
@@ -19,7 +19,7 @@ export const Guard = ({ condition, children, fallback, onFunnelRestrictEvent }:
       if (typeof condition === "function") {
         result = await condition();
         if (result === false) {
-          onFunnelRestrictEvent?.();
+          onRestrict?.();
         } else {
           setIsRender(true);
         }
@@ -27,7 +27,7 @@ export const Guard = ({ condition, children, fallback, onFunnelRestrictEvent }:
 
       if (typeof condition === "boolean") {
         if (condition === false) {
-          onFunnelRestrictEvent?.();
+          onRestrict?.();
         } else {
           setIsRender(true);
         }
@@ -38,7 +38,7 @@ export const Guard = ({ condition, children, fallback, onFunnelRestrictEvent }:
       check();
       isOnce.current = false;
     }
-  }, [canImmediateRender, condition, onFunnelRestrictEvent]);
+  }, [canImmediateRender, condition, onRestrict]);
 
   return canImmediateRender || isRender ? children : fallback;
 };
diff --git a/packages/funnel-core/src/external/query-string.ts b/packages/funnel-core/src/external/query-string.ts
deleted file mode 100644
index 3ce94c9..0000000
--- a/packages/funnel-core/src/external/query-string.ts
+++ /dev/null
@@ -1,63 +0,0 @@
-import qs from "qs";
-
-const getOrigin = () => {
-  if (typeof window === "undefined") return "";
-  return window.location.origin;
-};
-
-const getPathName = () => {
-  if (typeof window === "undefined") return "";
-  return window.location.pathname;
-};
-
-const getQs = <T extends Record<string, unknown>>(): T => {
-  if (typeof window === "undefined") return {} as T;
-
-  const search = window.location.search;
-  return qs.parse(search, { ignoreQueryPrefix: true }) as T;
-};
-
-const updateQs = <T extends Record<string, unknown>>(urlParams: T, params: Partial<T>): T => {
-  const currentParams = { ...urlParams };
-
-  // biome-ignore lint/complexity/noForEach: <explanation>
-  Object.keys(params).forEach((key) => {
-    //@ts-ignore
-    currentParams[key] = params[key];
-  });
-
-  return currentParams;
-};
-
-// 특정 쿼리스트링을 삭제하는 함수
-const deleteQs = <T extends Record<string, unknown>, U extends string>(urlParams: T, keys: U[]): Omit<T, U> => {
-  const currentParams = { ...urlParams };
-
-  // biome-ignore lint/complexity/noForEach: <explanation>
-  keys.forEach((key) => {
-    delete currentParams[key];
-  });
-
-  return currentParams;
-};
-
-const stringifyQs = (params: Record<string, unknown>): string => {
-  return qs.stringify(params, { addQueryPrefix: true });
-};
-
-const updateFunnelQs = (param: Record<string, unknown>, deleteKey?: string[]): string => {
-  const currentQueryParam = funnelQs.getQs();
-  const updateQueryParam = funnelQs.updateQs(currentQueryParam, param);
-  const deleteQueryParam = funnelQs.deleteQs(updateQueryParam, deleteKey ?? []);
-  return funnelQs.stringifyQs(deleteQueryParam);
-};
-
-export const funnelQs = {
-  getQs,
-  updateQs,
-  deleteQs,
-  stringifyQs,
-  getOrigin,
-  getPathName,
-  updateFunnelQs,
-};
diff --git a/packages/funnel-core/src/external/types.ts b/packages/funnel-core/src/external/types.ts
index fd29f24..759bdec 100644
--- a/packages/funnel-core/src/external/types.ts
+++ b/packages/funnel-core/src/external/types.ts
@@ -4,9 +4,11 @@ export type NonEmptyArray<T> = readonly [T, ...T[]];
 
 export type RoutesEventType = "replace" | "push" | "back";
 
+export type DeleteQueryParams = { deleteQueryParams?: string[] | string };
+
 export type FunnelStepChangeFunction<T extends NonEmptyArray<string>> = (
   step: T[number],
-  options?: { type?: RoutesEventType; deleteQueryParams?: string[] | string },
+  options?: { type?: RoutesEventType } & DeleteQueryParams,
 ) => void;
 
 export type RouteFunnelProps<Steps extends NonEmptyArray<string>> = Omit<FunnelProps<Steps>, "steps" | "step">;
@@ -25,10 +27,15 @@ export interface StepProps<Steps extends NonEmptyArray<string>> {
 export interface GuardProps {
   condition: boolean | (() => boolean | Promise<boolean>);
   children?: ReactNode;
-  onFunnelRestrictEvent?: () => void;
+  onRestrict?: () => void;
   fallback?: ReactNode;
 }
 
+export type CreateFunnelStepFunction<Steps extends NonEmptyArray<string>> = (
+  step: Steps[number],
+  options?: { deleteQueryParams?: string[] | string; searchParams?: URLSearchParams },
+) => Record<string, unknown>;
+
 export type FunnelAdapterReturnType<Steps extends NonEmptyArray<string>> = [
   ((props: RouteFunnelProps<Steps>) => JSX.Element) & {
     Step: (props: StepProps<Steps>) => JSX.Element;
@@ -38,11 +45,12 @@ export type FunnelAdapterReturnType<Steps extends NonEmptyArray<string>> = [
     funnelId: string;
     step: Steps[number] | undefined;
     onStepChange: FunnelStepChangeFunction<Steps>;
+    createFunnelStep: CreateFunnelStepFunction<Steps>;
   },
 ];
 
 export type FunnelOptions<T extends NonEmptyArray<string>> = {
   steps: T;
   step?: T[number] | undefined;
-  funnelId?: string;
+  funnelId: string;
 };
diff --git a/packages/funnel-core/src/external/use-core-funnel.tsx b/packages/funnel-core/src/external/use-core-funnel.tsx
index 135165b..7d63193 100644
--- a/packages/funnel-core/src/external/use-core-funnel.tsx
+++ b/packages/funnel-core/src/external/use-core-funnel.tsx
@@ -1,21 +1,31 @@
-import { useMemo } from "react";
+import { useEffect, useMemo } from "react";
 import { useDraft } from "../internal/use-draft";
-import { DEFAULT_FUNNEL_STEP_ID } from "./constant";
 import { Funnel } from "./funnel";
 import { Guard } from "./guard";
 import { Step } from "./step";
-import type { FunnelOptions, GuardProps, NonEmptyArray, RouteFunnelProps, StepProps } from "./types";
+import type {
+  FunnelOptions,
+  FunnelStepChangeFunction,
+  GuardProps,
+  NonEmptyArray,
+  RouteFunnelProps,
+  StepProps,
+} from "./types";
 
-export const useCoreFunnel = <Steps extends NonEmptyArray<string>>(options: FunnelOptions<Steps>) => {
-  const [_step, _setStep] = useDraft(options?.step ?? options?.steps[0]);
+export const useCoreFunnel = <Steps extends NonEmptyArray<string>>(
+  options: FunnelOptions<Steps> & { onStepChange?: FunnelStepChangeFunction<Steps> },
+) => {
+  const [_step, _setStep] = useDraft<Steps[number] | undefined>(options?.step);
   const steps = options.steps;
   const step = options?.step;
-  const funnelId = options?.funnelId ?? DEFAULT_FUNNEL_STEP_ID;
+  const funnelId = options?.funnelId;
 
-  const _onStepChange = (param: Steps[number]) => {
+  const _onStepChange: FunnelStepChangeFunction<Steps> = (param: Steps[number], routeOptions) => {
     _setStep(param);
   };
 
+  const onStepChange = options?.onStepChange ?? _onStepChange;
+
   const FunnelComponent = useMemo(() => {
     return Object.assign(
       (props: RouteFunnelProps<Steps>) => {
@@ -32,5 +42,5 @@ export const useCoreFunnel = <Steps extends NonEmptyArray<string>>(options: Funn
     );
   }, [step, steps]);
 
-  return [FunnelComponent, { funnelId, step, onStepChange: _onStepChange }] as const;
+  return [FunnelComponent, { funnelId, step, onStepChange }] as const;
 };
diff --git a/packages/funnel-core/src/index.ts b/packages/funnel-core/src/index.ts
index d99d637..8dc0875 100644
--- a/packages/funnel-core/src/index.ts
+++ b/packages/funnel-core/src/index.ts
@@ -1,8 +1,7 @@
-import { DEFAULT_FUNNEL_STEP_ID } from "./external/constant";
 import { FunnelClient, funnelOptions } from "./external/external-utils";
 import { Guard as FunnelGuard } from "./external/guard";
-import { funnelQs } from "./external/query-string";
 import type {
+  CreateFunnelStepFunction,
   FunnelAdapterReturnType,
   FunnelOptions,
   FunnelProps,
@@ -15,7 +14,7 @@ import type {
 } from "./external/types";
 import { useCoreFunnel } from "./external/use-core-funnel";
 
-export { useCoreFunnel, FunnelGuard, funnelQs, funnelOptions, FunnelClient, DEFAULT_FUNNEL_STEP_ID };
+export { useCoreFunnel, FunnelGuard, funnelOptions, FunnelClient };
 
 export type {
   NonEmptyArray,
@@ -27,4 +26,5 @@ export type {
   GuardProps,
   FunnelAdapterReturnType,
   FunnelOptions,
+  CreateFunnelStepFunction,
 };