diff --git a/app/src/main/java/jp/atled/agileworks/view/base/BaseViewModel.kt b/app/src/main/java/jp/atled/agileworks/view/base/BaseViewModel.kt
index 31e7adecf0a97477a7ec4983e0293be98eb607cb..571531a7271a199d8c211eeee3b484300aa650f8 100644
--- a/app/src/main/java/jp/atled/agileworks/view/base/BaseViewModel.kt
+++ b/app/src/main/java/jp/atled/agileworks/view/base/BaseViewModel.kt
@@ -1,11 +1,26 @@
 package jp.atled.agileworks.view.base
 
+import androidx.annotation.IdRes
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.SharedFlow
+import kotlinx.coroutines.flow.asSharedFlow
+import kotlinx.coroutines.launch
 
 open class BaseViewModel : ViewModel() {
 
     val dataLoading = MutableLiveData<Boolean>().apply { value = false }
 
     val logout = MutableLiveData<Boolean>()
+
+    private val reselectedItemSource : MutableSharedFlow<Int> = MutableSharedFlow()
+    val reselectedItem: SharedFlow<Int> = reselectedItemSource.asSharedFlow()
+
+    fun reselectBottomNavigationItem(@IdRes selectedId: Int){
+        viewModelScope.launch {
+            reselectedItemSource.emit(selectedId)
+        }
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/jp/atled/agileworks/view/ui/MainActivity.kt b/app/src/main/java/jp/atled/agileworks/view/ui/MainActivity.kt
index 1322ca82587e5de13e46754bfda378ef1c4c3482..f365be262335c2df3cfc4364563d2990e581d7fa 100644
--- a/app/src/main/java/jp/atled/agileworks/view/ui/MainActivity.kt
+++ b/app/src/main/java/jp/atled/agileworks/view/ui/MainActivity.kt
@@ -9,6 +9,7 @@ import android.os.Build
 import android.os.Bundle
 import android.util.Log
 import android.widget.TextView
+import androidx.activity.viewModels
 import androidx.annotation.RequiresApi
 import androidx.annotation.StringRes
 import androidx.appcompat.app.ActionBar
@@ -27,6 +28,7 @@ import jp.atled.agileworks.common.util.toFormattedString
 import jp.atled.agileworks.model.DeviceInfoRepository
 import jp.atled.agileworks.model.FcmRepository
 import jp.atled.agileworks.view.base.BaseActivity
+import jp.atled.agileworks.view.base.BaseViewModel
 import jp.atled.agileworks.view.ui.documentweb.DocumentWebFragment
 import jp.atled.agileworks.view.ui.login.LoginUtil
 import jp.atled.agileworks.view.utils.putNonNullStingFromExtra
@@ -38,6 +40,7 @@ class MainActivity : BaseActivity() {
 
     private var currentNavController: LiveData<NavController>? = null
     private lateinit var appBarConfiguration: AppBarConfiguration
+    private val viewModel by viewModels<BaseViewModel>()
 
     override fun onCreate(savedInstanceState: Bundle?) {
         Log.d(TAG, "call onCreate, url = ${intent?.getStringExtra("url")}, title = ${intent?.getStringExtra("title")}")
@@ -135,7 +138,8 @@ class MainActivity : BaseActivity() {
                 navGraphIds = navGraphIds,
                 fragmentManager = flagmentManager,
                 containerId = R.id.main_nav_fragment,
-                intent = intent
+                intent = intent,
+                viewModel = viewModel
         )
 
         /* webview 表示時 BottomNavigation を非表示にするリスト(残しておく) */
diff --git a/app/src/main/java/jp/atled/agileworks/view/ui/NavigationExtensions.kt b/app/src/main/java/jp/atled/agileworks/view/ui/NavigationExtensions.kt
index ef206a4e3f17f8d655d336b5780d75ac623c22b8..f88b25dca3d22968b79c5caceb8ad1034bf13068 100644
--- a/app/src/main/java/jp/atled/agileworks/view/ui/NavigationExtensions.kt
+++ b/app/src/main/java/jp/atled/agileworks/view/ui/NavigationExtensions.kt
@@ -27,6 +27,7 @@ import androidx.navigation.NavController
 import androidx.navigation.fragment.NavHostFragment
 import com.google.android.material.bottomnavigation.BottomNavigationView
 import jp.atled.agileworks.R
+import jp.atled.agileworks.view.base.BaseViewModel
 
 /**
  * Manages the various graphs needed for a [BottomNavigationView].
@@ -37,7 +38,8 @@ fun BottomNavigationView.setupWithNavController(
     navGraphIds: List<Int>,
     fragmentManager: FragmentManager,
     containerId: Int,
-    intent: Intent
+    intent: Intent,
+    viewModel: BaseViewModel
 ): LiveData<NavController> {
 
     // Map of tags
@@ -133,7 +135,7 @@ fun BottomNavigationView.setupWithNavController(
     }
 
     // Optional: on item reselected, pop back stack to the destination of the graph
-    setupItemReselected(graphIdToTagMap, fragmentManager)
+    setupItemReselected(graphIdToTagMap, fragmentManager, viewModel)
 
     // Handle deep link
     setupDeepLinks(navGraphIds, fragmentManager, containerId, intent)
@@ -181,13 +183,15 @@ private fun BottomNavigationView.setupDeepLinks(
 
 private fun BottomNavigationView.setupItemReselected(
     graphIdToTagMap: SparseArray<String>,
-    fragmentManager: FragmentManager
+    fragmentManager: FragmentManager,
+    viewModel: BaseViewModel
 ) {
     setOnNavigationItemReselectedListener { item ->
         val newlySelectedItemTag = graphIdToTagMap[item.itemId]
         val selectedFragment = fragmentManager.findFragmentByTag(newlySelectedItemTag)
             as NavHostFragment
         val navController = selectedFragment.navController
+        viewModel.reselectBottomNavigationItem(item.itemId)
         // Pop the back stack to the start destination of the current navController graph
         navController.popBackStack(
             navController.graph.startDestination, false
diff --git a/app/src/main/java/jp/atled/agileworks/view/ui/documentweb/DocumentWebFragment.kt b/app/src/main/java/jp/atled/agileworks/view/ui/documentweb/DocumentWebFragment.kt
index 6fe824773832bc605aeacc6b69ac21f5d532f655..df918789684b4b3d37dfe936bc6934fe9777f586 100644
--- a/app/src/main/java/jp/atled/agileworks/view/ui/documentweb/DocumentWebFragment.kt
+++ b/app/src/main/java/jp/atled/agileworks/view/ui/documentweb/DocumentWebFragment.kt
@@ -16,12 +16,17 @@ import android.widget.TextView
 import android.widget.Toolbar
 import androidx.core.view.GestureDetectorCompat
 import androidx.fragment.app.Fragment
+import androidx.fragment.app.activityViewModels
 import androidx.lifecycle.ViewModelProvider
+import androidx.lifecycle.lifecycleScope
 import jp.atled.agileworks.R
 import jp.atled.agileworks.AwApp
 import jp.atled.agileworks.databinding.FragmentWebviewDetailBinding
 import jp.atled.agileworks.model.SessionRepository
+import jp.atled.agileworks.view.base.BaseViewModel
 import kotlinx.android.synthetic.main.fragment_webview_detail.*
+import kotlinx.coroutines.flow.collect
+import kotlinx.coroutines.launch
 import java.lang.Exception
 import kotlin.math.absoluteValue
 
@@ -36,11 +41,14 @@ class DocumentWebFragment : Fragment(), DocumentWebPresenter {
     private var webview: WebView? = null
     private var lastUrl: String? = null
     private var connectUrl: String? = null
+    private var getUrl: String? = null
 
     // スワイプのジェスチャー。折に触れて状態設定をする必要があるのでメンバーとして持つ。
     // 必要とされるタイミング次第で null のままのことがある恐れがあるので lateinit にはしていない。
     private var swipeGestureListener: SwipeGestureListener? = null
 
+    private val baseViewModel by activityViewModels<BaseViewModel>()
+
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
         viewDataBinding = FragmentWebviewDetailBinding.inflate(inflater, container, false).apply {
             viewModel = ViewModelProvider(this@DocumentWebFragment).get(DocumentWebViewModel::class.java)
@@ -49,6 +57,17 @@ class DocumentWebFragment : Fragment(), DocumentWebPresenter {
         networkEvent = NetworkEvent(viewDataBinding)
         multilingualControl = MultilingualControl(requireActivity())
 
+        lifecycleScope.launch {
+            baseViewModel.reselectedItem
+                .collect {
+                    webview?.let {
+                        getUrl = it.getUrl()
+                    }
+                    if(getUrl != connectUrl){
+                        applyCookieManager(connectUrl, true)
+                    }
+                }
+        }
         return viewDataBinding.root
     }