diff --git a/feature/board/src/main/java/com/goalpanzi/mission_mate/feature/board/component/dialog/InvalidMissionErrorDialog.kt b/feature/board/src/main/java/com/goalpanzi/mission_mate/feature/board/component/dialog/InvalidMissionErrorDialog.kt
new file mode 100644
index 0000000..cb3227a
--- /dev/null
+++ b/feature/board/src/main/java/com/goalpanzi/mission_mate/feature/board/component/dialog/InvalidMissionErrorDialog.kt
@@ -0,0 +1,26 @@
+package com.goalpanzi.mission_mate.feature.board.component.dialog
+
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.window.DialogProperties
+import com.goalpanzi.mission_mate.core.designsystem.component.MissionMateDialog
+import com.goalpanzi.mission_mate.feature.board.R
+
+@Composable
+fun InvalidMissionErrorDialog(
+    onDismissRequest: () -> Unit,
+    onClickOk: () -> Unit,
+    modifier: Modifier = Modifier
+) {
+    MissionMateDialog(
+        titleId = R.string.board_mission_not_exist,
+        onDismissRequest = onDismissRequest,
+        onClickOk = onClickOk,
+        okTextId = R.string.retry,
+        dialogProperties = DialogProperties(
+            usePlatformDefaultWidth = false,
+            dismissOnBackPress = false,
+            dismissOnClickOutside = false
+        )
+    )
+}
diff --git a/feature/board/src/main/java/com/goalpanzi/mission_mate/feature/board/model/MissionError.kt b/feature/board/src/main/java/com/goalpanzi/mission_mate/feature/board/model/MissionError.kt
index 2d8e7bd..1b1c46b 100644
--- a/feature/board/src/main/java/com/goalpanzi/mission_mate/feature/board/model/MissionError.kt
+++ b/feature/board/src/main/java/com/goalpanzi/mission_mate/feature/board/model/MissionError.kt
@@ -1,5 +1,5 @@
 package com.goalpanzi.mission_mate.feature.board.model
 
 enum class MissionError {
-    NOT_EXIST,
-}
\ No newline at end of file
+    NOT_EXIST, INVALID_MISSION
+}
diff --git a/feature/board/src/main/java/com/goalpanzi/mission_mate/feature/board/screen/BoardScreen.kt b/feature/board/src/main/java/com/goalpanzi/mission_mate/feature/board/screen/BoardScreen.kt
index a849244..05eeab6 100644
--- a/feature/board/src/main/java/com/goalpanzi/mission_mate/feature/board/screen/BoardScreen.kt
+++ b/feature/board/src/main/java/com/goalpanzi/mission_mate/feature/board/screen/BoardScreen.kt
@@ -51,6 +51,8 @@ import com.goalpanzi.mission_mate.feature.board.model.uimodel.MissionBoardUiMode
 import com.goalpanzi.mission_mate.feature.board.model.uimodel.MissionUiModel
 import com.goalpanzi.mission_mate.feature.board.model.uimodel.MissionVerificationUiModel
 import com.goalpanzi.mission_mate.core.designsystem.component.StableImage
+import com.goalpanzi.mission_mate.feature.board.component.dialog.InvalidMissionErrorDialog
+import com.goalpanzi.mission_mate.feature.board.model.MissionError
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 
@@ -83,6 +85,7 @@ fun BoardRoute(
         onRefresh = viewModel::refreshMissionData
     )
     var isShownDeleteMissionDialog by remember { mutableStateOf(false) }
+    var isShownNotLoadedErrorDialog by remember { mutableStateOf(false) }
     var isShownBoardRewardDialog by remember { mutableStateOf<BoardReward?>(null) }
     var isShownInvitationCodeDialog by remember { mutableStateOf(false) }
 
@@ -123,11 +126,19 @@ fun BoardRoute(
             }
         }
         launch {
-            viewModel.missionError.collect {
-                if(it != null){
-                    Toast.makeText(context,context.getString(R.string.board_mission_not_exist), Toast.LENGTH_SHORT).show()
-                    onNavigateOnboarding()
-                    return@collect
+            viewModel.missionError.collect { error ->
+                when(error){
+                    MissionError.INVALID_MISSION -> {
+                        isShownNotLoadedErrorDialog = true
+                        viewModel.resetMissionError()
+                    }
+                    MissionError.NOT_EXIST -> {
+                        Toast.makeText(context,context.getString(R.string.board_mission_not_exist), Toast.LENGTH_SHORT).show()
+                        viewModel.resetMissionError()
+                        onNavigateOnboarding()
+                        return@collect
+                    }
+                    else -> { }
                 }
             }
         }
@@ -141,6 +152,18 @@ fun BoardRoute(
         }
     }
 
+    if (isShownNotLoadedErrorDialog) {
+        InvalidMissionErrorDialog(
+            onDismissRequest = {
+                isShownNotLoadedErrorDialog = false
+            },
+            onClickOk = {
+                isShownNotLoadedErrorDialog = false
+                viewModel.fetchMissionData()
+            }
+        )
+    }
+
     if (isShownDeleteMissionDialog) {
         DeleteMissionDialog(
             onDismissRequest = {
diff --git a/feature/board/src/main/java/com/goalpanzi/mission_mate/feature/board/screen/BoardViewModel.kt b/feature/board/src/main/java/com/goalpanzi/mission_mate/feature/board/screen/BoardViewModel.kt
index 99d9411..3c08007 100644
--- a/feature/board/src/main/java/com/goalpanzi/mission_mate/feature/board/screen/BoardViewModel.kt
+++ b/feature/board/src/main/java/com/goalpanzi/mission_mate/feature/board/screen/BoardViewModel.kt
@@ -70,7 +70,7 @@ class BoardViewModel @Inject constructor(
 
     val viewedToolTip: StateFlow<Boolean> = getViewedTooltipUseCase().stateIn(
         viewModelScope,
-        started = SharingStarted.WhileSubscribed(500),
+        started = SharingStarted.WhileSubscribed(5_000),
         initialValue = true
     )
 
@@ -108,7 +108,7 @@ class BoardViewModel @Inject constructor(
             memberId == mission.missionDetail.hostMemberId
         }.stateIn(
             viewModelScope,
-            started = SharingStarted.WhileSubscribed(500),
+            started = SharingStarted.WhileSubscribed(5_000),
             initialValue = false
         )
 
@@ -121,7 +121,7 @@ class BoardViewModel @Inject constructor(
             getMissionState(missionBoard, mission, missionVerification)
         }.stateIn(
             scope = viewModelScope,
-            started = SharingStarted.WhileSubscribed(500),
+            started = SharingStarted.WhileSubscribed(5_000),
             initialValue = MissionState.LOADING
         )
     private val _boardRewardEvent = MutableSharedFlow<BoardReward?>()
@@ -194,7 +194,7 @@ class BoardViewModel @Inject constructor(
 
                     else -> {
                         _missionBoardUiModel.emit(MissionBoardUiModel.Error)
-                        if(!isSameAsLastMission()) _missionError.emit(MissionError.NOT_EXIST)
+                        handleMissionError(isSameAsLastMission())
                     }
                 }
             }
@@ -211,7 +211,7 @@ class BoardViewModel @Inject constructor(
 
                 else -> {
                     _missionUiModel.emit(MissionUiModel.Error)
-                    if(!isSameAsLastMission()) _missionError.emit(MissionError.NOT_EXIST)
+                    handleMissionError(isSameAsLastMission())
                 }
             }
         }
@@ -228,7 +228,7 @@ class BoardViewModel @Inject constructor(
 
                 else -> {
                     _missionVerificationUiModel.emit(MissionVerificationUiModel.Error)
-                    if(!isSameAsLastMission()) _missionError.emit(MissionError.NOT_EXIST)
+                    handleMissionError(isSameAsLastMission())
                 }
             }
         }
@@ -293,6 +293,15 @@ class BoardViewModel @Inject constructor(
         }
     }
 
+    fun resetMissionError() {
+        _missionError.value = null
+    }
+
+    private suspend fun handleMissionError(isSameAsLastMission : Boolean){
+        if(isSameAsLastMission) _missionError.emit(MissionError.INVALID_MISSION)
+        else _missionError.emit(MissionError.NOT_EXIST)
+    }
+
     private suspend fun isSameAsLastMission(): Boolean {
         return when (val result = getJoinedMissionsUseCase(filter = statusString).firstOrNull()) {
             is DomainResult.Success -> {
diff --git a/feature/board/src/main/res/values/strings.xml b/feature/board/src/main/res/values/strings.xml
index 7d45613..e62eb5b 100644
--- a/feature/board/src/main/res/values/strings.xml
+++ b/feature/board/src/main/res/values/strings.xml
@@ -53,11 +53,13 @@
     <string name="board_mission_detail_description_color_target">인증횟수(보드판 수)는 총 %d개</string>
     <string name="board_mission_detail_delete">삭제하기</string>
 
-    <string name="board_mission_not_exist">미션을 불러올 수 없습니다.</string>
+    <string name="board_mission_not_exist">미션을 불러올 수 없어요.</string>
     <string name="board_complete_error">에러가 발생하였습니다.</string>
 
     <string name="ok">확인</string>
     <string name="cancel">취소</string>
     <string name="close">닫기</string>
     <string name="upload">업로드</string>
+
+    <string name="retry">재시도</string>
 </resources>