diff --git a/speechserving/speechserving/restful/tts_api.py b/speechserving/speechserving/restful/tts_api.py
index 05121718..c78eaf63 100644
--- a/speechserving/speechserving/restful/tts_api.py
+++ b/speechserving/speechserving/restful/tts_api.py
@@ -11,8 +11,11 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+from engine.tts.python.tts_engine import TTSEngine
 from fastapi import APIRouter
 
+from .request import TTSRequest
+from .response import TTSResponse
 
 router = APIRouter()
 
@@ -24,6 +27,64 @@ def help():
     Returns:
         json: [description]
     """
-    return {'hello': 'world'}
+    json_body = {
+        "success": true,
+        "code": 0,
+        "message": {
+            "global": "success"
+        },
+        "result": {
+            "description": "tts server",
+            "text": "sentence to be synthesized",
+            "audio": "the base64 of audio"
+        }
+    }
+    return json_body
 
 
+@router.post("/paddlespeech/tts", response_model=TTSResponse)
+def tts(request_body: TTSRequest):
+    """tts api
+
+    Args:
+        request_body (TTSRequest): [description]
+
+    Returns:
+        json: [description]
+    """
+    # json to dict 
+    item_dict = request_body.dict()
+    sentence = item_dict['text']
+    spk_id = item_dict['spk_id']
+    speed = item_dict['speed']
+    volume = item_dict['volume']
+    sample_rate = item_dict['sample_rate']
+    save_path = item_dict['save_path']
+    audio_format = item_dict['audio_format']
+
+    # single
+    tts_engine = TTSEngine()
+
+    #tts_engine.init()
+    lang, target_sample_rate, wav_base64 = tts_engine.run(
+        sentence, spk_id, speed, volume, sample_rate, save_path, audio_format)
+    #tts_engine.postprocess()
+
+    json_body = {
+        "success": True,
+        "code": 0,
+        "message": {
+            "description": "success"
+        },
+        "result": {
+            "lang": lang,
+            "spk_id": spk_id,
+            "speed": speed,
+            "volume": volume,
+            "sample_rate": target_sample_rate,
+            "save_path": save_path,
+            "audio": wav_base64
+        }
+    }
+
+    return json_body