diff --git a/paddlespeech/t2s/exps/inference.py b/paddlespeech/t2s/exps/inference.py
index e0ae20bb1..56dd7838a 100644
--- a/paddlespeech/t2s/exps/inference.py
+++ b/paddlespeech/t2s/exps/inference.py
@@ -88,20 +88,27 @@ def parse_args():
     parser.add_argument("--output_dir", type=str, help="output dir")
     # inference
     parser.add_argument(
-        "--int8",
+        "--use_trt",
         type=str2bool,
         default=False,
-        help="Whether to use int8 inference.", )
+        help="whether to use TensorRT or not in GPU", )
     parser.add_argument(
-        "--fp16",
+        "--use_mkldnn",
         type=str2bool,
         default=False,
-        help="Whether to use float16 inference.", )
+        help="whether to use MKLDNN or not in CPU.", )
+    parser.add_argument(
+        "--precision",
+        type=str,
+        default='fp32',
+        choices=['fp32', 'fp16', 'bf16', 'int8'],
+        help="mode of running")
     parser.add_argument(
         "--device",
         default="gpu",
         choices=["gpu", "cpu"],
         help="Device selected for inference.", )
+    parser.add_argument('--cpu_threads', type=int, default=1)
 
     args, _ = parser.parse_known_args()
     return args
@@ -124,7 +131,11 @@ def main():
         model_dir=args.inference_dir,
         model_file=args.am + ".pdmodel",
         params_file=args.am + ".pdiparams",
-        device=args.device)
+        device=args.device,
+        use_trt=args.use_trt,
+        use_mkldnn=args.use_mkldnn,
+        cpu_threads=args.cpu_threads,
+        precision=args.precision)
     # model: {model_name}_{dataset}
     am_dataset = args.am[args.am.rindex('_') + 1:]
 
@@ -133,7 +144,11 @@ def main():
         model_dir=args.inference_dir,
         model_file=args.voc + ".pdmodel",
         params_file=args.voc + ".pdiparams",
-        device=args.device)
+        device=args.device,
+        use_trt=args.use_trt,
+        use_mkldnn=args.use_mkldnn,
+        cpu_threads=args.cpu_threads,
+        precision=args.precision)
 
     output_dir = Path(args.output_dir)
     output_dir.mkdir(parents=True, exist_ok=True)
diff --git a/paddlespeech/t2s/exps/syn_utils.py b/paddlespeech/t2s/exps/syn_utils.py
index 0ac799813..6b693440c 100644
--- a/paddlespeech/t2s/exps/syn_utils.py
+++ b/paddlespeech/t2s/exps/syn_utils.py
@@ -464,18 +464,97 @@ def voc_to_static(voc_inference,
 
 
 # inference
-def get_predictor(model_dir: Optional[os.PathLike]=None,
-                  model_file: Optional[os.PathLike]=None,
-                  params_file: Optional[os.PathLike]=None,
-                  device: str='cpu'):
+def get_predictor(
+        model_dir: Optional[os.PathLike]=None,
+        model_file: Optional[os.PathLike]=None,
+        params_file: Optional[os.PathLike]=None,
+        device: str='cpu',
+        # for gpu
+        use_trt: bool=False,
+        # for trt
+        use_dynamic_shape: bool=True,
+        min_subgraph_size: int=5,
+        # for cpu
+        cpu_threads: int=1,
+        use_mkldnn: bool=False,
+        # for trt or mkldnn
+        precision: int="fp32"):
+    """
+    Args:
+        model_dir (os.PathLike): root path of model.pdmodel and model.pdiparams.
+        model_file (os.PathLike): name of model_file.
+        params_file (os.PathLike): name of params_file.
+        device (str): Choose the device you want to run, it can be: cpu/gpu, default is cpu.
+        use_trt (bool): whether to use TensorRT or not in GPU.
+        use_dynamic_shape (bool): use dynamic shape or not in TensorRT.
+        use_mkldnn (bool): whether to use MKLDNN or not in CPU.
+        cpu_threads (int): num of thread when use CPU.
+        precision (str): mode of running (fp32/fp16/bf16/int8).  
+    """
+    rerun_flag = False
+    if device != "gpu" and use_trt:
+        raise ValueError(
+            "Predict by TensorRT mode: {}, expect device=='gpu', but device == {}".
+            format(precision, device))
 
     config = inference.Config(
         str(Path(model_dir) / model_file), str(Path(model_dir) / params_file))
+    config.enable_memory_optim()
+    config.switch_ir_optim(True)
     if device == "gpu":
         config.enable_use_gpu(100, 0)
-    elif device == "cpu":
+    else:
         config.disable_gpu()
-    config.enable_memory_optim()
+        config.set_cpu_math_library_num_threads(cpu_threads)
+        if use_mkldnn:
+            # fp32
+            config.enable_mkldnn()
+            if precision == "int8":
+                config.enable_mkldnn_int8({
+                    "conv2d_transpose", "conv2d", "depthwise_conv2d", "pool2d",
+                    "transpose2", "elementwise_mul"
+                })
+                # config.enable_mkldnn_int8()
+            elif precision in {"fp16", "bf16"}:
+                config.enable_mkldnn_bfloat16()
+            print("MKLDNN with {}".format(precision))
+    if use_trt:
+        if precision == "bf16":
+            print("paddle trt does not support bf16, switching to fp16.")
+            precision = "fp16"
+        precision_map = {
+            "int8": inference.Config.Precision.Int8,
+            "fp32": inference.Config.Precision.Float32,
+            "fp16": inference.Config.Precision.Half,
+        }
+        assert precision in precision_map.keys()
+        pdtxt_name = model_file.split(".")[0] + "_" + precision + ".txt"
+        if use_dynamic_shape:
+            dynamic_shape_file = os.path.join(model_dir, pdtxt_name)
+            if os.path.exists(dynamic_shape_file):
+                config.enable_tuned_tensorrt_dynamic_shape(dynamic_shape_file,
+                                                           True)
+                # for fastspeech2
+                config.exp_disable_tensorrt_ops(["reshape2"])
+                print("trt set dynamic shape done!")
+            else:
+                # In order to avoid memory overflow when collecting dynamic shapes, it is changed to use CPU.
+                config.disable_gpu()
+                config.set_cpu_math_library_num_threads(10)
+                config.collect_shape_range_info(dynamic_shape_file)
+                print("Start collect dynamic shape...")
+                rerun_flag = True
+
+        if not rerun_flag:
+            print("Tensor RT with {}".format(precision))
+            config.enable_tensorrt_engine(
+                workspace_size=1 << 30,
+                max_batch_size=1,
+                min_subgraph_size=min_subgraph_size,
+                precision_mode=precision_map[precision],
+                use_static=True,
+                use_calib_mode=False, )
+
     predictor = inference.create_predictor(config)
     return predictor