diff --git a/Extensions/Optional+Extension.swift b/Extensions/Optional+Extension.swift
new file mode 100644
index 0000000..2be162c
--- /dev/null
+++ b/Extensions/Optional+Extension.swift
@@ -0,0 +1,23 @@
+//
+//  Optional+Extension.swift
+//  momoIOS
+//
+//  Created by 임수현 on 2023/02/11.
+//
+
+import Foundation
+
+extension Optional {
+    var isNil: Bool {
+        self == nil
+    }
+    var isNotNil: Bool {
+        self != nil
+    }
+}
+
+extension String? {
+    var isEmptyOrNil: Bool {
+        self?.isEmpty == true || self.isNil
+    }
+}
diff --git a/momoIOS.xcodeproj/project.pbxproj b/momoIOS.xcodeproj/project.pbxproj
index 1fee1b7..96b3417 100644
--- a/momoIOS.xcodeproj/project.pbxproj
+++ b/momoIOS.xcodeproj/project.pbxproj
@@ -14,6 +14,7 @@
 		3AA713D1298946FF006F922F /* UIColor+Extension.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3AA713D0298946FF006F922F /* UIColor+Extension.swift */; };
 		3ABBF7362996B6C9004D4D0B /* String+Extension.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3ABBF7352996B6C9004D4D0B /* String+Extension.swift */; };
 		3ABBF73A2996B8C9004D4D0B /* Collection+Extension.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3ABBF7392996B8C9004D4D0B /* Collection+Extension.swift */; };
+		3ABBF73C2996D48C004D4D0B /* Optional+Extension.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3ABBF73B2996D48C004D4D0B /* Optional+Extension.swift */; };
 		3ADF66102993F48A00577028 /* AttendanceDetailViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3ADF660F2993F48A00577028 /* AttendanceDetailViewController.swift */; };
 		BF0408632987B3AA00F1129B /* LoginController.swift in Sources */ = {isa = PBXBuildFile; fileRef = BF0408622987B3AA00F1129B /* LoginController.swift */; };
 		BF04086B2987E34800F1129B /* AuthCommonConstants.swift in Sources */ = {isa = PBXBuildFile; fileRef = BF04086A2987E34800F1129B /* AuthCommonConstants.swift */; };
@@ -49,6 +50,7 @@
 		3AA713D0298946FF006F922F /* UIColor+Extension.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "UIColor+Extension.swift"; sourceTree = "<group>"; };
 		3ABBF7352996B6C9004D4D0B /* String+Extension.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "String+Extension.swift"; sourceTree = "<group>"; };
 		3ABBF7392996B8C9004D4D0B /* Collection+Extension.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "Collection+Extension.swift"; sourceTree = "<group>"; };
+		3ABBF73B2996D48C004D4D0B /* Optional+Extension.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "Optional+Extension.swift"; sourceTree = "<group>"; };
 		3ADF660F2993F48A00577028 /* AttendanceDetailViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AttendanceDetailViewController.swift; sourceTree = "<group>"; };
 		BF0408622987B3AA00F1129B /* LoginController.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = LoginController.swift; sourceTree = "<group>"; };
 		BF04086A2987E34800F1129B /* AuthCommonConstants.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AuthCommonConstants.swift; sourceTree = "<group>"; };
@@ -180,6 +182,7 @@
 				BFB8431E298CFF9200BA11EC /* UIStackView+Extension.swift */,
 				3ABBF7352996B6C9004D4D0B /* String+Extension.swift */,
 				3ABBF7392996B8C9004D4D0B /* Collection+Extension.swift */,
+				3ABBF73B2996D48C004D4D0B /* Optional+Extension.swift */,
 			);
 			path = Extensions;
 			sourceTree = "<group>";
@@ -349,6 +352,7 @@
 				3AA713D1298946FF006F922F /* UIColor+Extension.swift in Sources */,
 				3AA713C929884007006F922F /* MainAttendanceDoneCell.swift in Sources */,
 				E820792F298A138500B36FC9 /* MainSessionAbsentCell.swift in Sources */,
+				3ABBF73C2996D48C004D4D0B /* Optional+Extension.swift in Sources */,
 				3ABBF73A2996B8C9004D4D0B /* Collection+Extension.swift in Sources */,
 				BF4310FA298C525900270DBF /* AttendanceHistoryCell.swift in Sources */,
 			);
diff --git a/momoIOS/AttendanceDetail/ViewController/AttendanceDetailViewController.swift b/momoIOS/AttendanceDetail/ViewController/AttendanceDetailViewController.swift
index 5c1ca4d..0674ab5 100644
--- a/momoIOS/AttendanceDetail/ViewController/AttendanceDetailViewController.swift
+++ b/momoIOS/AttendanceDetail/ViewController/AttendanceDetailViewController.swift
@@ -15,6 +15,14 @@ class AttendanceDetailViewController: UIViewController {
     private let descriptionLabel: UILabel = UILabel()
     private let attendButton: UIButton = UIButton()
     
+    private var inputCodeString: String {
+        var string = ""
+        self.codeTextFields.forEach { textField in
+            string.append(textField.text ?? " ")
+        }
+        return string
+    }
+    
     // MARK: - Lifecycle
     override func viewDidLoad() {
         super.viewDidLoad()
@@ -83,7 +91,8 @@ class AttendanceDetailViewController: UIViewController {
         self.backgroundView.addSubview(self.descriptionLabel)
         
         self.attendButton.setTitle("출석하기", size: 16, weight: .bold, color: .white)
-        self.attendButton.configurate(bgColor: .rgba(56, 56, 56, 1), cornerRadius: 7, padding: 10)
+        self.configureAttendButtonEnabled()
+        self.attendButton.addTarget(self, action: #selector(didTapAttendanceButton), for: .touchUpInside)
     }
     
     // MARK: - Layout
@@ -138,11 +147,35 @@ class AttendanceDetailViewController: UIViewController {
             make.height.equalTo(54)
         }
     }
+    
+    // MARK: - Actions
+    @objc private func didTapAttendanceButton() {
+        self.navigationController?.popViewController(animated: true)
+    }
+    
+    private func configureAttendButtonEnabled() {
+        let isAttendButtonEnabled = {
+            for textField in self.codeTextFields where textField.text.isEmptyOrNil {
+                return false
+            }
+            return true
+        }()
+        
+        if isAttendButtonEnabled {
+            self.attendButton.isEnabled = true
+            self.attendButton.configurate(bgColor: .rgba(56, 56, 56, 1), cornerRadius: 7, padding: 10)
+        } else {
+            self.attendButton.isEnabled = false
+            self.attendButton.configurate(bgColor: .rgba(200, 200, 200, 1), cornerRadius: 7, padding: 10)
+        }
+    }
 }
 
 // MARK: - UITextFieldDelegate
 extension AttendanceDetailViewController: UITextFieldDelegate {
     func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
+        defer { self.configureAttendButtonEnabled() }
+        
         let currentText = textField.text ?? ""
         let newText = range.lowerBound == 0 ? string : currentText.replaced(string, in: range) ?? ""
         
@@ -183,7 +216,7 @@ extension AttendanceDetailViewController: UITextFieldDelegate {
     }
     
     // MARK: - TextField Actions
-    @objc func keyboardWillShow(_ notification: NSNotification) {
+    @objc private func keyboardWillShow(_ notification: NSNotification) {
         if self.isEditingCode {
             self.attendButton.moveWithKeyboard(
                 willShow: true,
@@ -193,7 +226,7 @@ extension AttendanceDetailViewController: UITextFieldDelegate {
         }
     }
     
-    @objc func keyboardWillHide(_ notification: NSNotification) {
+    @objc private func keyboardWillHide(_ notification: NSNotification) {
         self.attendButton.moveWithKeyboard(
             willShow: false,
             notification: notification,