diff --git a/app/src/main/java/io/legado/app/data/entities/DictRule.kt b/app/src/main/java/io/legado/app/data/entities/DictRule.kt
index 54512a991..5b8f8b520 100644
--- a/app/src/main/java/io/legado/app/data/entities/DictRule.kt
+++ b/app/src/main/java/io/legado/app/data/entities/DictRule.kt
@@ -24,11 +24,11 @@ data class DictRule(
     /**
      * 搜索字典
      */
-    suspend fun search(word: String): String? {
+    suspend fun search(word: String): String {
         val analyzeUrl = AnalyzeUrl(urlRule, key = word)
         val body = analyzeUrl.getStrResponseAwait().body
         if (showRule.isBlank()) {
-             return body
+            return body!!
         }
         val analyzeRule = AnalyzeRule()
         return analyzeRule.getString(showRule, mContent = body)
diff --git a/app/src/main/java/io/legado/app/ui/dict/DictDialog.kt b/app/src/main/java/io/legado/app/ui/dict/DictDialog.kt
index d1800a569..ff2fb7f9a 100644
--- a/app/src/main/java/io/legado/app/ui/dict/DictDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/dict/DictDialog.kt
@@ -60,15 +60,14 @@ class DictDialog() : BaseDialogFragment(R.layout.dialog_dict) {
             override fun onTabSelected(tab: TabLayout.Tab) {
                 val dictRule = tab.tag as DictRule
                 binding.rotateLoading.visible()
-                viewModel.dict(dictRule, word!!)
+                viewModel.dict(dictRule, word!!) {
+                    binding.rotateLoading.inVisible()
+                    binding.tvDict.setHtml(it)
+                }
             }
         })
-        viewModel.dictHtmlData.observe(viewLifecycleOwner) {
-            binding.rotateLoading.inVisible()
-            binding.tvDict.setHtml(it)
-        }
         viewModel.initData {
-            viewModel.dictRules?.forEach {
+            it.forEach {
                 binding.tabLayout.addTab(binding.tabLayout.newTab().apply {
                     text = it.name
                     tag = it
diff --git a/app/src/main/java/io/legado/app/ui/dict/DictViewModel.kt b/app/src/main/java/io/legado/app/ui/dict/DictViewModel.kt
index 4730b3530..10e02c34c 100644
--- a/app/src/main/java/io/legado/app/ui/dict/DictViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/dict/DictViewModel.kt
@@ -1,32 +1,35 @@
 package io.legado.app.ui.dict
 
 import android.app.Application
-import androidx.lifecycle.MutableLiveData
 import io.legado.app.base.BaseViewModel
 import io.legado.app.data.entities.DictRule
 import io.legado.app.help.DefaultData
-import io.legado.app.utils.toastOnUi
+import io.legado.app.help.coroutine.Coroutine
 
 class DictViewModel(application: Application) : BaseViewModel(application) {
-    var dictRules: List<DictRule>? = null
-    var dictHtmlData: MutableLiveData<String> = MutableLiveData()
 
-    fun initData(onSuccess: () -> Unit) {
+    private var dictJob: Coroutine<String>? = null
+
+    fun initData(onSuccess: (List<DictRule>) -> Unit) {
         execute {
             DefaultData.dictRules
         }.onSuccess {
-            dictRules = it
-            onSuccess.invoke()
+            onSuccess.invoke(it)
         }
     }
 
-    fun dict(dictRule: DictRule, word: String) {
-        execute {
+    fun dict(
+        dictRule: DictRule,
+        word: String,
+        onFinally: (String) -> Unit
+    ) {
+        dictJob?.cancel()
+        dictJob = execute {
             dictRule.search(word)
         }.onSuccess {
-            dictHtmlData.postValue(it)
+            onFinally.invoke(it)
         }.onError {
-            context.toastOnUi(it.localizedMessage)
+            onFinally.invoke(it.localizedMessage ?: "ERROR")
         }
     }