diff --git a/src-tauri/src/provider.rs b/src-tauri/src/provider.rs
index 43e5dafe..ed5e3514 100644
--- a/src-tauri/src/provider.rs
+++ b/src-tauri/src/provider.rs
@@ -242,6 +242,9 @@ pub struct ProviderMeta {
     /// - "openai_responses": OpenAI Responses API 格式，需要转换
     #[serde(rename = "apiFormat", skip_serializing_if = "Option::is_none")]
     pub api_format: Option<String>,
+    /// Claude 认证字段名（"ANTHROPIC_AUTH_TOKEN" 或 "ANTHROPIC_API_KEY"）
+    #[serde(rename = "apiKeyField", skip_serializing_if = "Option::is_none")]
+    pub api_key_field: Option<String>,
     /// Prompt cache key for OpenAI-compatible endpoints.
     /// When set, injected into converted requests to improve cache hit rate.
     /// If not set, provider ID is used automatically during format conversion.
diff --git a/src/components/providers/forms/ClaudeFormFields.tsx b/src/components/providers/forms/ClaudeFormFields.tsx
index c9430c09..6b8ceef3 100644
--- a/src/components/providers/forms/ClaudeFormFields.tsx
+++ b/src/components/providers/forms/ClaudeFormFields.tsx
@@ -10,7 +10,11 @@ import {
 } from "@/components/ui/select";
 import EndpointSpeedTest from "./EndpointSpeedTest";
 import { ApiKeySection, EndpointField } from "./shared";
-import type { ProviderCategory, ClaudeApiFormat } from "@/types";
+import type {
+  ProviderCategory,
+  ClaudeApiFormat,
+  ClaudeApiKeyField,
+} from "@/types";
 import type { TemplateValueConfig } from "@/config/claudeProviderPresets";
 
 interface EndpointCandidate {
@@ -68,6 +72,10 @@ interface ClaudeFormFieldsProps {
   // API Format (for third-party providers that use OpenAI Chat Completions format)
   apiFormat: ClaudeApiFormat;
   onApiFormatChange: (format: ClaudeApiFormat) => void;
+
+  // Auth Field (ANTHROPIC_AUTH_TOKEN or ANTHROPIC_API_KEY)
+  apiKeyField: ClaudeApiKeyField;
+  onApiKeyFieldChange: (field: ClaudeApiKeyField) => void;
 }
 
 export function ClaudeFormFields({
@@ -102,6 +110,8 @@ export function ClaudeFormFields({
   speedTestEndpoints,
   apiFormat,
   onApiFormatChange,
+  apiKeyField,
+  onApiKeyFieldChange,
 }: ClaudeFormFieldsProps) {
   const { t } = useTranslation();
 
@@ -226,6 +236,40 @@ export function ClaudeFormFields({
         </div>
       )}
 
+      {/* 认证字段选择器 */}
+      {shouldShowModelSelector && (
+        <div className="space-y-2">
+          <FormLabel>
+            {t("providerForm.authField", { defaultValue: "认证字段" })}
+          </FormLabel>
+          <Select
+            value={apiKeyField}
+            onValueChange={(v) => onApiKeyFieldChange(v as ClaudeApiKeyField)}
+          >
+            <SelectTrigger>
+              <SelectValue />
+            </SelectTrigger>
+            <SelectContent>
+              <SelectItem value="ANTHROPIC_AUTH_TOKEN">
+                {t("providerForm.authFieldAuthToken", {
+                  defaultValue: "ANTHROPIC_AUTH_TOKEN（默认）",
+                })}
+              </SelectItem>
+              <SelectItem value="ANTHROPIC_API_KEY">
+                {t("providerForm.authFieldApiKey", {
+                  defaultValue: "ANTHROPIC_API_KEY",
+                })}
+              </SelectItem>
+            </SelectContent>
+          </Select>
+          <p className="text-xs text-muted-foreground">
+            {t("providerForm.authFieldHint", {
+              defaultValue: "选择写入配置的认证环境变量名",
+            })}
+          </p>
+        </div>
+      )}
+
       {/* 模型选择器 */}
       {shouldShowModelSelector && (
         <div className="space-y-3">
diff --git a/src/components/providers/forms/ProviderForm.tsx b/src/components/providers/forms/ProviderForm.tsx
index 788e1c73..4bc2250b 100644
--- a/src/components/providers/forms/ProviderForm.tsx
+++ b/src/components/providers/forms/ProviderForm.tsx
@@ -14,6 +14,7 @@ import type {
   ProviderTestConfig,
   ProviderProxyConfig,
   ClaudeApiFormat,
+  ClaudeApiKeyField,
 } from "@/types";
 import {
   providerPresets,
@@ -244,6 +245,18 @@ export function ProviderForm({
     [form],
   );
 
+  const [localApiKeyField, setLocalApiKeyField] = useState<ClaudeApiKeyField>(
+    () => {
+      if (appId !== "claude") return "ANTHROPIC_AUTH_TOKEN";
+      if (initialData?.meta?.apiKeyField) return initialData.meta.apiKeyField;
+      // Infer from existing config env
+      const env = (initialData?.settingsConfig as Record<string, unknown>)
+        ?.env as Record<string, unknown> | undefined;
+      if (env?.ANTHROPIC_API_KEY !== undefined) return "ANTHROPIC_API_KEY";
+      return "ANTHROPIC_AUTH_TOKEN";
+    },
+  );
+
   const {
     apiKey,
     handleApiKeyChange,
@@ -254,6 +267,7 @@ export function ProviderForm({
     selectedPresetId,
     category,
     appType: appId,
+    apiKeyField: appId === "claude" ? localApiKeyField : undefined,
   });
 
   const { baseUrl, handleClaudeBaseUrlChange } = useBaseUrlState({
@@ -286,6 +300,30 @@ export function ProviderForm({
     setLocalApiFormat(format);
   }, []);
 
+  const handleApiKeyFieldChange = useCallback(
+    (field: ClaudeApiKeyField) => {
+      const prev = localApiKeyField;
+      setLocalApiKeyField(field);
+
+      // Swap the env key name in settingsConfig
+      try {
+        const raw = form.getValues("settingsConfig");
+        const config = JSON.parse(raw || "{}");
+        if (config?.env && prev in config.env) {
+          const value = config.env[prev];
+          delete config.env[prev];
+          config.env[field] = value;
+          const updated = JSON.stringify(config, null, 2);
+          form.setValue("settingsConfig", updated);
+          handleSettingsConfigChange(updated);
+        }
+      } catch {
+        // ignore parse errors during editing
+      }
+    },
+    [localApiKeyField, form, handleSettingsConfigChange],
+  );
+
   const {
     codexAuth,
     codexConfig,
@@ -844,6 +882,12 @@ export function ProviderForm({
         appId === "claude" && category !== "official"
           ? localApiFormat
           : undefined,
+      apiKeyField:
+        appId === "claude" &&
+        category !== "official" &&
+        localApiKeyField !== "ANTHROPIC_AUTH_TOKEN"
+          ? localApiKeyField
+          : undefined,
     };
 
     onSubmit(payload);
@@ -1082,6 +1126,8 @@ export function ProviderForm({
       setLocalApiFormat("anthropic");
     }
 
+    setLocalApiKeyField(preset.apiKeyField ?? "ANTHROPIC_AUTH_TOKEN");
+
     form.reset({
       name: preset.name,
       websiteUrl: preset.websiteUrl ?? "",
@@ -1287,6 +1333,8 @@ export function ProviderForm({
             speedTestEndpoints={speedTestEndpoints}
             apiFormat={localApiFormat}
             onApiFormatChange={handleApiFormatChange}
+            apiKeyField={localApiKeyField}
+            onApiKeyFieldChange={handleApiKeyFieldChange}
           />
         )}
 
diff --git a/src/components/providers/forms/hooks/useApiKeyState.ts b/src/components/providers/forms/hooks/useApiKeyState.ts
index 9101d2e3..8b4c8762 100644
--- a/src/components/providers/forms/hooks/useApiKeyState.ts
+++ b/src/components/providers/forms/hooks/useApiKeyState.ts
@@ -12,6 +12,7 @@ interface UseApiKeyStateProps {
   selectedPresetId: string | null;
   category?: ProviderCategory;
   appType?: string;
+  apiKeyField?: string;
 }
 
 /**
@@ -24,6 +25,7 @@ export function useApiKeyState({
   selectedPresetId,
   category,
   appType,
+  apiKeyField,
 }: UseApiKeyStateProps) {
   const [apiKey, setApiKey] = useState(() => {
     if (initialConfig) {
@@ -58,7 +60,7 @@ export function useApiKeyState({
         initialConfig || "{}",
         key.trim(),
         {
-          // 最佳实践：仅在“新增模式”且“非官方类别”时补齐缺失字段
+          // 最佳实践：仅在"新增模式"且"非官方类别"时补齐缺失字段
           // - 新增模式：selectedPresetId !== null
           // - 非官方类别：category !== undefined && category !== "official"
           // - 官方类别：不创建字段（UI 也会禁用输入框）
@@ -68,12 +70,20 @@ export function useApiKeyState({
             category !== undefined &&
             category !== "official",
           appType,
+          apiKeyField,
         },
       );
 
       onConfigChange(configString);
     },
-    [initialConfig, selectedPresetId, category, appType, onConfigChange],
+    [
+      initialConfig,
+      selectedPresetId,
+      category,
+      appType,
+      apiKeyField,
+      onConfigChange,
+    ],
   );
 
   const showApiKey = useCallback(
diff --git a/src/i18n/locales/en.json b/src/i18n/locales/en.json
index f05e6c15..a60dd9cf 100644
--- a/src/i18n/locales/en.json
+++ b/src/i18n/locales/en.json
@@ -739,6 +739,10 @@
     "apiFormatAnthropic": "Anthropic Messages (Native)",
     "apiFormatOpenAIChat": "OpenAI Chat Completions (Requires proxy)",
     "apiFormatOpenAIResponses": "OpenAI Responses API (Requires proxy)",
+    "authField": "Auth Field",
+    "authFieldAuthToken": "ANTHROPIC_AUTH_TOKEN (Default)",
+    "authFieldApiKey": "ANTHROPIC_API_KEY",
+    "authFieldHint": "Select the authentication env variable name for the config",
     "apiHintResponses": "💡 Fill in OpenAI Responses API compatible service endpoint, avoid trailing slash",
     "anthropicDefaultHaikuModel": "Default Haiku Model",
     "anthropicDefaultSonnetModel": "Default Sonnet Model",
diff --git a/src/i18n/locales/ja.json b/src/i18n/locales/ja.json
index 02c2d2b0..6f67e6ff 100644
--- a/src/i18n/locales/ja.json
+++ b/src/i18n/locales/ja.json
@@ -739,6 +739,10 @@
     "apiFormatAnthropic": "Anthropic Messages（ネイティブ）",
     "apiFormatOpenAIChat": "OpenAI Chat Completions（プロキシが必要）",
     "apiFormatOpenAIResponses": "OpenAI Responses API（プロキシが必要）",
+    "authField": "認証フィールド",
+    "authFieldAuthToken": "ANTHROPIC_AUTH_TOKEN（デフォルト）",
+    "authFieldApiKey": "ANTHROPIC_API_KEY",
+    "authFieldHint": "設定に書き込む認証環境変数名を選択",
     "apiHintResponses": "💡 OpenAI Responses API 互換サービスのエンドポイントを入力してください。末尾にスラッシュを付けないでください",
     "anthropicDefaultHaikuModel": "既定 Haiku モデル",
     "anthropicDefaultSonnetModel": "既定 Sonnet モデル",
diff --git a/src/i18n/locales/zh.json b/src/i18n/locales/zh.json
index 3ff812d6..a8b1fc21 100644
--- a/src/i18n/locales/zh.json
+++ b/src/i18n/locales/zh.json
@@ -739,6 +739,10 @@
     "apiFormatAnthropic": "Anthropic Messages (原生)",
     "apiFormatOpenAIChat": "OpenAI Chat Completions (需开启代理)",
     "apiFormatOpenAIResponses": "OpenAI Responses API (需开启代理)",
+    "authField": "认证字段",
+    "authFieldAuthToken": "ANTHROPIC_AUTH_TOKEN（默认）",
+    "authFieldApiKey": "ANTHROPIC_API_KEY",
+    "authFieldHint": "选择写入配置的认证环境变量名",
     "apiHintResponses": "💡 填写兼容 OpenAI Responses API 的服务端点地址，不要以斜杠结尾",
     "anthropicDefaultHaikuModel": "Haiku 默认模型",
     "anthropicDefaultSonnetModel": "Sonnet 默认模型",
diff --git a/src/types.ts b/src/types.ts
index 5b1e2d69..2957b897 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -149,6 +149,8 @@ export interface ProviderMeta {
   // - "openai_chat": OpenAI Chat Completions 格式，需要格式转换
   // - "openai_responses": OpenAI Responses API 格式，需要格式转换
   apiFormat?: "anthropic" | "openai_chat" | "openai_responses";
+  // Claude 认证字段名
+  apiKeyField?: ClaudeApiKeyField;
   // Prompt cache key for OpenAI-compatible endpoints (improves cache hit rate)
   promptCacheKey?: string;
 }
@@ -162,6 +164,9 @@ export type SkillSyncMethod = "auto" | "symlink" | "copy";
 // - "openai_responses": OpenAI Responses API 格式，需要格式转换
 export type ClaudeApiFormat = "anthropic" | "openai_chat" | "openai_responses";
 
+// Claude 认证字段类型
+export type ClaudeApiKeyField = "ANTHROPIC_AUTH_TOKEN" | "ANTHROPIC_API_KEY";
+
 // 主页面显示的应用配置
 export interface VisibleApps {
   claude: boolean;
diff --git a/src/utils/providerConfigUtils.ts b/src/utils/providerConfigUtils.ts
index ba685f07..b35dcabe 100644
--- a/src/utils/providerConfigUtils.ts
+++ b/src/utils/providerConfigUtils.ts
@@ -295,9 +295,13 @@ export const hasApiKeyField = (
 export const setApiKeyInConfig = (
   jsonString: string,
   apiKey: string,
-  options: { createIfMissing?: boolean; appType?: string } = {},
+  options: {
+    createIfMissing?: boolean;
+    appType?: string;
+    apiKeyField?: string;
+  } = {},
 ): string => {
-  const { createIfMissing = false, appType } = options;
+  const { createIfMissing = false, appType, apiKeyField } = options;
   try {
     const config = JSON.parse(jsonString);
 
@@ -337,13 +341,13 @@ export const setApiKeyInConfig = (
       return JSON.stringify(config, null, 2);
     }
 
-    // Claude API Key (优先写入已存在的字段；若两者均不存在且允许创建，则默认创建 AUTH_TOKEN 字段)
+    // Claude API Key (优先写入已存在的字段；若两者均不存在且允许创建，则使用 apiKeyField 或默认 AUTH_TOKEN 字段)
     if ("ANTHROPIC_AUTH_TOKEN" in env) {
       env.ANTHROPIC_AUTH_TOKEN = apiKey;
     } else if ("ANTHROPIC_API_KEY" in env) {
       env.ANTHROPIC_API_KEY = apiKey;
     } else if (createIfMissing) {
-      env.ANTHROPIC_AUTH_TOKEN = apiKey;
+      env[apiKeyField ?? "ANTHROPIC_AUTH_TOKEN"] = apiKey;
     } else {
       return jsonString;
     }