diff --git a/app/src/main/kotlin/top/fatweb/oxygen/toolbox/data/tool/dao/ToolDao.kt b/app/src/main/kotlin/top/fatweb/oxygen/toolbox/data/tool/dao/ToolDao.kt
index 8974b93..3c6f54d 100644
--- a/app/src/main/kotlin/top/fatweb/oxygen/toolbox/data/tool/dao/ToolDao.kt
+++ b/app/src/main/kotlin/top/fatweb/oxygen/toolbox/data/tool/dao/ToolDao.kt
@@ -21,7 +21,7 @@ interface ToolDao {
     suspend fun deleteTool(tool: ToolEntity)
 
     @Query("SELECT * FROM tools WHERE id = :id")
-    fun selectToolById(id: Long): Flow<ToolEntity>
+    fun selectToolById(id: Long): Flow<ToolEntity?>
 
     @Query("SELECT * FROM tools ORDER BY updateTime DESC")
     fun selectAllTools(): Flow<List<ToolEntity>>
diff --git a/app/src/main/kotlin/top/fatweb/oxygen/toolbox/ui/tool/ToolStoreScreen.kt b/app/src/main/kotlin/top/fatweb/oxygen/toolbox/ui/tool/ToolStoreScreen.kt
index 94caf7e..a146c6b 100644
--- a/app/src/main/kotlin/top/fatweb/oxygen/toolbox/ui/tool/ToolStoreScreen.kt
+++ b/app/src/main/kotlin/top/fatweb/oxygen/toolbox/ui/tool/ToolStoreScreen.kt
@@ -48,6 +48,7 @@ import androidx.hilt.navigation.compose.hiltViewModel
 import androidx.paging.LoadState
 import androidx.paging.compose.LazyPagingItems
 import androidx.paging.compose.collectAsLazyPagingItems
+import kotlinx.coroutines.flow.StateFlow
 import top.fatweb.oxygen.toolbox.R
 import top.fatweb.oxygen.toolbox.icon.Loading
 import top.fatweb.oxygen.toolbox.icon.OxygenIcons
@@ -70,6 +71,7 @@ internal fun ToolStoreRoute(
         modifier = modifier,
         onNavigateToToolView = onNavigateToToolView,
         toolStorePagingItems = toolStorePagingItems,
+        hasInstalled = { viewModel.hasInstalled(it) },
         onChangeInstallStatus = viewModel::changeInstallStatus,
         onInstallTool = viewModel::installTool,
         installInfo = installInfo
@@ -81,6 +83,7 @@ internal fun ToolStoreScreen(
     modifier: Modifier = Modifier,
     onNavigateToToolView: (username: String, toolId: String) -> Unit,
     toolStorePagingItems: LazyPagingItems<ToolEntity>,
+    hasInstalled: (ToolEntity) -> StateFlow<Boolean>,
     onChangeInstallStatus: (installStatus: ToolStoreUiState.Status, username: String?, toolId: String?) -> Unit,
     onInstallTool: () -> Unit,
     installInfo: ToolStoreUiState.InstallInfo
@@ -110,6 +113,7 @@ internal fun ToolStoreScreen(
         ) {
             toolsPanel(
                 toolStorePagingItems = toolStorePagingItems,
+                hasInstalled = hasInstalled,
                 onAction = { username, toolId ->
                     onChangeInstallStatus(
                         ToolStoreUiState.Status.Pending,
@@ -270,6 +274,7 @@ internal fun ToolStoreScreen(
 
 private fun LazyStaggeredGridScope.toolsPanel(
     toolStorePagingItems: LazyPagingItems<ToolEntity>,
+    hasInstalled: (ToolEntity) -> StateFlow<Boolean>,
     onAction: (username: String, toolId: String) -> Unit,
     onClick: (username: String, toolId: String) -> Unit
 ) {
@@ -277,9 +282,10 @@ private fun LazyStaggeredGridScope.toolsPanel(
         items = toolStorePagingItems.itemSnapshotList,
         key = { it!!.id },
     ) {
+        val installed by hasInstalled(it!!).collectAsState()
         ToolCard(
             tool = it!!,
-            actionIcon = OxygenIcons.Download,
+            actionIcon = if (installed) null else OxygenIcons.Download,
             actionIconContentDescription = stringResource(R.string.core_install),
             onAction = { onAction(it.authorUsername, it.toolId) },
             onClick = { onClick(it.authorUsername, it.toolId) },
diff --git a/app/src/main/kotlin/top/fatweb/oxygen/toolbox/ui/tool/ToolStoreViewModel.kt b/app/src/main/kotlin/top/fatweb/oxygen/toolbox/ui/tool/ToolStoreViewModel.kt
index 4925d6d..e762e45 100644
--- a/app/src/main/kotlin/top/fatweb/oxygen/toolbox/ui/tool/ToolStoreViewModel.kt
+++ b/app/src/main/kotlin/top/fatweb/oxygen/toolbox/ui/tool/ToolStoreViewModel.kt
@@ -9,8 +9,13 @@ import androidx.paging.cachedIn
 import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.SharingStarted
+import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.flow.flatMapLatest
+import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.flow.stateIn
 import kotlinx.coroutines.launch
 import kotlinx.parcelize.Parcelize
 import top.fatweb.oxygen.toolbox.model.Result
@@ -18,6 +23,7 @@ import top.fatweb.oxygen.toolbox.model.tool.ToolEntity
 import top.fatweb.oxygen.toolbox.repository.tool.StoreRepository
 import top.fatweb.oxygen.toolbox.repository.tool.ToolRepository
 import javax.inject.Inject
+import kotlin.time.Duration.Companion.seconds
 
 @HiltViewModel
 class ToolStoreViewModel @Inject constructor(
@@ -27,6 +33,11 @@ class ToolStoreViewModel @Inject constructor(
 ) : ViewModel() {
     private val searchValue = savedStateHandle.getStateFlow(SEARCH_VALUE, "")
     private val currentPage = savedStateHandle.getStateFlow(CURRENT_PAGE, 1)
+    private val installedStatus =
+        savedStateHandle.getStateFlow<MutableMap<String, MutableMap<String, Boolean>>>(
+            INSTALLED_STATUS,
+            mutableMapOf()
+        )
     val installInfo = savedStateHandle.getStateFlow(
         INSTALL_INFO, ToolStoreUiState.InstallInfo()
     )
@@ -35,9 +46,27 @@ class ToolStoreViewModel @Inject constructor(
     val storeData: Flow<PagingData<ToolEntity>> = combine(
         searchValue, currentPage, ::Pair
     ).flatMapLatest { (searchValue, currentPage) ->
-        storeRepository.getStore(searchValue, currentPage).cachedIn(viewModelScope)
+        storeRepository.getStore(searchValue, currentPage).cachedIn(
+            scope = viewModelScope
+        )
     }
 
+    fun hasInstalled(toolEntity: ToolEntity): StateFlow<Boolean> =
+        installedStatus.value[toolEntity.authorUsername]?.get(toolEntity.toolId)?.let { MutableStateFlow(it) }
+            ?: toolRepository.getToolByUsernameAndToolId(toolEntity.authorUsername, toolEntity.toolId).map {
+                if (installedStatus.value[toolEntity.authorUsername] == null) {
+                    installedStatus.value[toolEntity.authorUsername] =
+                        mutableMapOf(toolEntity.toolId to (it != null))
+                } else {
+                    installedStatus.value[toolEntity.authorUsername]?.set(toolEntity.toolId, it != null)
+                }
+                it != null
+            }.stateIn(
+                scope = viewModelScope,
+                initialValue = true,
+                started = SharingStarted.WhileSubscribed(5.seconds.inWholeMilliseconds)
+            )
+
     fun changeInstallStatus(
         installStatus: ToolStoreUiState.Status, username: String?, toolId: String?
     ) {
@@ -60,6 +89,12 @@ class ToolStoreViewModel @Inject constructor(
                         toolRepository.saveTool(it.data)
                         savedStateHandle[INSTALL_INFO] =
                             ToolStoreUiState.InstallInfo(ToolStoreUiState.Status.Success)
+                        if (installedStatus.value[username] == null) {
+                            installedStatus.value[username] =
+                                mutableMapOf(toolId to true)
+                        } else {
+                            installedStatus.value[username]?.set(toolId, true)
+                        }
                     }
                 }
             }
@@ -85,4 +120,5 @@ data class ToolStoreUiState(
 
 private const val SEARCH_VALUE = "searchValue"
 private const val CURRENT_PAGE = "currentPage"
+private const val INSTALLED_STATUS = "installedStatus"
 private const val INSTALL_INFO = "installInfo"