diff --git a/packages/ui/src/components/ImageModelEditModal.vue b/packages/ui/src/components/ImageModelEditModal.vue
index 229ab6e4..a46ea417 100644
--- a/packages/ui/src/components/ImageModelEditModal.vue
+++ b/packages/ui/src/components/ImageModelEditModal.vue
@@ -149,7 +149,7 @@
     <template #action>
       <NSpace justify="space-between" align="center" style="width: 100%;">
         <!-- 左侧：连接测试 -->
-        <NSpace align="center" v-if="selectedProvider">
+        <NSpace align="center">
           <NButton
             @click="handleTestConnection"
             :loading="isTestingConnection"
@@ -262,7 +262,9 @@ const {
   selectedProvider,
   selectedModel,
   currentParameterDefinitions,
-  // (use local computed for UI gates)
+  isConnectionConfigured,
+  canTestConnection,
+  canRefreshModels,
 
   // methods
   onProviderChange: handleProviderChange,
@@ -340,23 +342,6 @@ const connectionFields = computed(() => {
   return fields
 })
 
-const isConnectionConfigured = computed(() => {
-  if (!selectedProvider.value?.connectionSchema) return true
-
-  const schema = selectedProvider.value.connectionSchema
-  const config = configForm.value.connectionConfig || {}
-
-  return schema.required.every(field => config[field])
-})
-
-const canTestConnection = computed(() => {
-  return selectedProvider.value && isConnectionConfigured.value
-})
-
-const canRefreshModels = computed(() => {
-  return selectedProvider.value?.supportsDynamicModels && isConnectionConfigured.value
-})
-
 const refreshButtonTooltip = computed(() => {
   if (canRefreshModels.value) {
     return t('image.model.refreshTooltip')
diff --git a/packages/ui/src/composables/model/useImageModelManager.ts b/packages/ui/src/composables/model/useImageModelManager.ts
index 9c3b2ff2..54f2e62c 100644
--- a/packages/ui/src/composables/model/useImageModelManager.ts
+++ b/packages/ui/src/composables/model/useImageModelManager.ts
@@ -152,6 +152,19 @@ export function useImageModelManager() {
     supportsDynamicModels.value && isConnectionConfigured.value && !isLoadingDynamicModels.value
   )
 
+  const canTestConnection = computed(() => {
+    // 测试期间禁用
+    if (isTestingConnection.value) return false
+    // 必须有必需的连接配置
+    if (!isConnectionConfigured.value) return false
+    // 必须有模型 ID（发送请求所需）
+    if (!configForm.value.modelId?.trim()) return false
+    // 必须有 provider
+    if (!configForm.value.providerId) return false
+
+    return true
+  })
+
   // 初始化数据加载
   const loadProviders = async () => {
     isLoadingProviders.value = true
@@ -696,6 +709,7 @@ export function useImageModelManager() {
     supportsDynamicModels,
     isConnectionConfigured,
     canRefreshModels,
+    canTestConnection,
     currentParameterDefinitions,
     currentParamOverrides,
     availableParameterCount,
diff --git a/packages/ui/src/composables/model/useTextModelManager.ts b/packages/ui/src/composables/model/useTextModelManager.ts
index 94ccb4d9..d6be13cb 100644
--- a/packages/ui/src/composables/model/useTextModelManager.ts
+++ b/packages/ui/src/composables/model/useTextModelManager.ts
@@ -153,14 +153,14 @@ export function useTextModelManager() {
   })
 
   const canTestFormConnection = computed(() => {
-    // 必须在编辑模式下
-    if (!editingModelId.value) return false
     // 测试期间禁用
     if (isTestingFormConnection.value) return false
     // 必须有必需的连接配置
     if (!isConnectionConfigured.value) return false
-    // 必须有模型名称
-    if (!form.value.name?.trim()) return false
+    // 必须有模型 ID（发送请求所需）
+    if (!form.value.modelId?.trim()) return false
+    // 必须有 provider
+    if (!form.value.providerId) return false
 
     return true
   })
@@ -614,34 +614,32 @@ export function useTextModelManager() {
     formConnectionStatus.value = { type: 'info', message: t('modelManager.testing') }
 
     try {
-      const existingConfig = editingModelId.value ? await modelManager.getModel(editingModelId.value) : undefined
-      if (!existingConfig) {
-        throw new Error('模型配置不存在')
-      }
-
       if (!form.value.providerId || !form.value.modelId) {
         throw new Error('模型未选择')
       }
 
-      const providerMeta = ensureProviderMeta(form.value.providerId, existingConfig.providerMeta)
-      const modelMeta = ensureModelMeta(form.value.providerId, form.value.modelId, existingConfig.modelMeta)
+      // 编辑模式下获取现有配置，新增模式下为 undefined
+      const existingConfig = editingModelId.value ? await modelManager.getModel(editingModelId.value) : undefined
+
+      const providerMeta = ensureProviderMeta(form.value.providerId, existingConfig?.providerMeta)
+      const modelMeta = ensureModelMeta(form.value.providerId, form.value.modelId, existingConfig?.modelMeta)
 
       const baseURL = typeof form.value.connectionConfig?.baseURL === 'string'
         ? form.value.connectionConfig.baseURL.trim()
         : undefined
 
       const connectionConfig: TextConnectionConfig = {
-        baseURL: baseURL || existingConfig.connectionConfig?.baseURL,
-        ...existingConfig.connectionConfig,
+        baseURL: baseURL || existingConfig?.connectionConfig?.baseURL,
+        ...existingConfig?.connectionConfig,
         ...form.value.connectionConfig,
         apiKey: form.value.displayMaskedKey && form.value.originalApiKey
           ? form.value.originalApiKey
-          : (form.value.connectionConfig.apiKey || existingConfig.connectionConfig?.apiKey)
+          : (form.value.connectionConfig.apiKey || existingConfig?.connectionConfig?.apiKey)
       }
 
       const tempConfig = {
-        id: `temp-test-${editingModelId.value}-${Date.now()}`,
-        name: form.value.name,
+        id: `temp-test-${editingModelId.value || 'new'}-${Date.now()}`,
+        name: form.value.name || form.value.modelId,
         enabled: form.value.enabled,
         providerMeta,
         modelMeta,
@@ -654,8 +652,9 @@ export function useTextModelManager() {
       try {
         // 测试临时模型
         await llmService.testConnection(tempConfig.id)
-        formConnectionStatus.value = { type: 'success', message: t('modelManager.testSuccess', { provider: form.value.name }) }
-        toast.success(t('modelManager.testSuccess', { provider: form.value.name }))
+        const displayName = form.value.name || form.value.modelId
+        formConnectionStatus.value = { type: 'success', message: t('modelManager.testSuccess', { provider: displayName }) }
+        toast.success(t('modelManager.testSuccess', { provider: displayName }))
       } finally {
         // 清理临时模型
         try {
@@ -667,11 +666,12 @@ export function useTextModelManager() {
 
     } catch (error) {
       console.error('连接测试失败:', error)
+      const displayName = form.value.name || form.value.modelId
       formConnectionStatus.value = {
         type: 'error',
-        message: t('modelManager.testFailed', { provider: form.value.name, error: error instanceof Error ? error.message : 'Unknown error' || 'Unknown error' })
+        message: t('modelManager.testFailed', { provider: displayName, error: error instanceof Error ? error.message : 'Unknown error' })
       }
-      toast.error(t('modelManager.testFailed', { provider: form.value.name, error: error instanceof Error ? error.message : 'Unknown error' || 'Unknown error' }))
+      toast.error(t('modelManager.testFailed', { provider: displayName, error: error instanceof Error ? error.message : 'Unknown error' }))
     } finally {
       isTestingFormConnection.value = false
     }