diff --git a/astrbot/core/provider/sources/azure_tts_source.py b/astrbot/core/provider/sources/azure_tts_source.py
index 70e90ea70..95ce4d3e0 100644
--- a/astrbot/core/provider/sources/azure_tts_source.py
+++ b/astrbot/core/provider/sources/azure_tts_source.py
@@ -28,7 +28,15 @@ class OTTSProvider:
         self.last_sync_time = 0
         self.timeout = Timeout(10.0)
         self.retry_count = 3
+        self.client = None
+
+    async def __aenter__(self):
         self.client = AsyncClient(timeout=self.timeout)
+        return self
+
+    async def __aexit__(self, exc_type, exc_val, exc_tb):
+        if self.client:
+            await self.client.aclose()
 
     async def _sync_time(self):
         try:
@@ -63,9 +71,10 @@ class OTTSProvider:
                         "role": voice_params["role"],
                         "rate": voice_params["rate"],
                         "volume": voice_params["volume"]
-                    },headers={
+                    },
+                    headers={
                         "User-Agent": f"AstrBot/{VERSION}",
-                        "UAK": f"AstrBot/AzureTTS"
+                        "UAK": "AstrBot/AzureTTS"
                     }
                 )
                 response.raise_for_status()
@@ -85,17 +94,11 @@ class AzureNativeProvider(TTSProvider):
         self.subscription_key = provider_config["azure_tts_subscription_key"].strip()
         if not re.fullmatch(r'^[a-zA-Z0-9]{32}$', self.subscription_key):
             raise ValueError("无效的Azure订阅密钥")
-
         self.region = provider_config.get("azure_tts_region", "eastus").strip()
         self.endpoint = f"https://{self.region}.tts.speech.microsoft.com/cognitiveservices/v1"
-        self.client = AsyncClient(headers={
-            "User-Agent": f"AstrBot/{VERSION}",
-            "Content-Type": "application/ssml+xml",
-            "X-Microsoft-OutputFormat": "riff-48khz-16bit-mono-pcm"
-        })
+        self.client = None
         self.token = None
         self.token_expire = 0
-
         self.voice_params = {
             "voice": provider_config.get("azure_tts_voice", "zh-CN-YunxiaNeural"),
             "style": provider_config.get("azure_tts_style", "cheerful"),
@@ -104,6 +107,18 @@ class AzureNativeProvider(TTSProvider):
             "volume": provider_config.get("azure_tts_volume", "100")
         }
 
+    async def __aenter__(self):
+        self.client = AsyncClient(headers={
+            "User-Agent": f"AstrBot/{VERSION}",
+            "Content-Type": "application/ssml+xml",
+            "X-Microsoft-OutputFormat": "riff-48khz-16bit-mono-pcm"
+        })
+        return self
+
+    async def __aexit__(self, exc_type, exc_val, exc_tb):
+        if self.client:
+            await self.client.aclose()
+
     async def _refresh_token(self):
         token_url = f"https://{self.region}.api.cognitive.microsoft.com/sts/v1.0/issuetoken"
         response = await self.client.post(
@@ -136,7 +151,7 @@ class AzureNativeProvider(TTSProvider):
             headers={
                 "Authorization": f"Bearer {self.token}",
                 "User-Agent": f"AstrBot/{VERSION}"
-                }
+            }
         )
         response.raise_for_status()
         file_path.parent.mkdir(parents=True, exist_ok=True)
@@ -163,7 +178,6 @@ class AzureTTSProvider(TTSProvider):
                 required = {"OTTS_SKEY", "OTTS_URL", "OTTS_AUTH_TIME"}
                 if missing := required - otts_config.keys():
                     raise ValueError(f"缺少OTTS参数: {', '.join(missing)}")
-
                 return OTTSProvider(otts_config)
             except json.JSONDecodeError as e:
                 error_msg = (
@@ -177,16 +191,20 @@ class AzureTTSProvider(TTSProvider):
         if re.fullmatch(r'^[a-zA-Z0-9]{32}$', key_value):
             return AzureNativeProvider(config, self.provider_settings)
         raise ValueError("订阅密钥格式无效，应为32位字母数字或other[...]格式")
+
     async def get_audio(self, text: str) -> str:
         if isinstance(self.provider, OTTSProvider):
-            return await self.provider.get_audio(
-                text,
-                {
-                    "voice": self.provider_config.get("azure_tts_voice"),
-                    "style": self.provider_config.get("azure_tts_style"),
-                    "role": self.provider_config.get("azure_tts_role"),
-                    "rate": self.provider_config.get("azure_tts_rate"),
-                    "volume": self.provider_config.get("azure_tts_volume")
-                }
-            )
-        return await self.provider.get_audio(text)
\ No newline at end of file
+            async with self.provider as provider:
+                return await provider.get_audio(
+                    text,
+                    {
+                        "voice": self.provider_config.get("azure_tts_voice"),
+                        "style": self.provider_config.get("azure_tts_style"),
+                        "role": self.provider_config.get("azure_tts_role"),
+                        "rate": self.provider_config.get("azure_tts_rate"),
+                        "volume": self.provider_config.get("azure_tts_volume")
+                    }
+                )
+        else:
+            async with self.provider as provider:
+                return await provider.get_audio(text)
\ No newline at end of file