diff --git a/funasr/bin/eend_ola_inference.py b/funasr/bin/eend_ola_inference.py
new file mode 100755
index 000000000..d191877ac
--- /dev/null
+++ b/funasr/bin/eend_ola_inference.py
@@ -0,0 +1,413 @@
+#!/usr/bin/env python3
+# Copyright FunASR (https://github.com/alibaba-damo-academy/FunASR). All Rights Reserved.
+#  MIT License  (https://opensource.org/licenses/MIT)
+
+import argparse
+import logging
+import os
+import sys
+from pathlib import Path
+from typing import Any
+from typing import List
+from typing import Optional
+from typing import Sequence
+from typing import Tuple
+from typing import Union
+
+import numpy as np
+import torch
+from typeguard import check_argument_types
+
+from funasr.models.frontend.wav_frontend import WavFrontendMel23
+from funasr.tasks.diar import EENDOLADiarTask
+from funasr.torch_utils.device_funcs import to_device
+from funasr.utils import config_argparse
+from funasr.utils.cli_utils import get_commandline_args
+from funasr.utils.types import str2bool
+from funasr.utils.types import str2triple_str
+from funasr.utils.types import str_or_none
+
+
+class Speech2Diarization:
+    """Speech2Diarlization class
+
+    Examples:
+        >>> import soundfile
+        >>> import numpy as np
+        >>> speech2diar = Speech2Diarization("diar_sond_config.yml", "diar_sond.pth")
+        >>> profile = np.load("profiles.npy")
+        >>> audio, rate = soundfile.read("speech.wav")
+        >>> speech2diar(audio, profile)
+        {"spk1": [(int, int), ...], ...}
+
+    """
+
+    def __init__(
+            self,
+            diar_train_config: Union[Path, str] = None,
+            diar_model_file: Union[Path, str] = None,
+            device: str = "cpu",
+            dtype: str = "float32",
+    ):
+        assert check_argument_types()
+
+        # 1. Build Diarization model
+        diar_model, diar_train_args = EENDOLADiarTask.build_model_from_file(
+            config_file=diar_train_config,
+            model_file=diar_model_file,
+            device=device
+        )
+        frontend = None
+        if diar_train_args.frontend is not None and diar_train_args.frontend_conf is not None:
+            frontend = WavFrontendMel23(**diar_train_args.frontend_conf)
+
+        # set up seed for eda
+        np.random.seed(diar_train_args.seed)
+        torch.manual_seed(diar_train_args.seed)
+        torch.cuda.manual_seed(diar_train_args.seed)
+        os.environ['PYTORCH_SEED'] = str(diar_train_args.seed)
+        logging.info("diar_model: {}".format(diar_model))
+        logging.info("diar_train_args: {}".format(diar_train_args))
+        diar_model.to(dtype=getattr(torch, dtype)).eval()
+
+        self.diar_model = diar_model
+        self.diar_train_args = diar_train_args
+        self.device = device
+        self.dtype = dtype
+        self.frontend = frontend
+
+    @torch.no_grad()
+    def __call__(
+            self,
+            speech: Union[torch.Tensor, np.ndarray],
+            speech_lengths: Union[torch.Tensor, np.ndarray] = None
+    ):
+        """Inference
+
+        Args:
+            speech: Input speech data
+        Returns:
+            diarization results
+
+        """
+        assert check_argument_types()
+        # Input as audio signal
+        if isinstance(speech, np.ndarray):
+            speech = torch.tensor(speech)
+
+        if self.frontend is not None:
+            feats, feats_len = self.frontend.forward(speech, speech_lengths)
+            feats = to_device(feats, device=self.device)
+            feats_len = feats_len.int()
+            self.diar_model.frontend = None
+        else:
+            feats = speech
+            feats_len = speech_lengths
+        batch = {"speech": feats, "speech_lengths": feats_len}
+        batch = to_device(batch, device=self.device)
+        results = self.diar_model.estimate_sequential(**batch)
+
+        return results
+
+    @staticmethod
+    def from_pretrained(
+            model_tag: Optional[str] = None,
+            **kwargs: Optional[Any],
+    ):
+        """Build Speech2Diarization instance from the pretrained model.
+
+        Args:
+            model_tag (Optional[str]): Model tag of the pretrained models.
+                Currently, the tags of espnet_model_zoo are supported.
+
+        Returns:
+            Speech2Xvector: Speech2Xvector instance.
+
+        """
+        if model_tag is not None:
+            try:
+                from espnet_model_zoo.downloader import ModelDownloader
+
+            except ImportError:
+                logging.error(
+                    "`espnet_model_zoo` is not installed. "
+                    "Please install via `pip install -U espnet_model_zoo`."
+                )
+                raise
+            d = ModelDownloader()
+            kwargs.update(**d.download_and_unpack(model_tag))
+
+        return Speech2Diarization(**kwargs)
+
+
+def inference_modelscope(
+        diar_train_config: str,
+        diar_model_file: str,
+        output_dir: Optional[str] = None,
+        batch_size: int = 1,
+        dtype: str = "float32",
+        ngpu: int = 0,
+        num_workers: int = 0,
+        log_level: Union[int, str] = "INFO",
+        key_file: Optional[str] = None,
+        model_tag: Optional[str] = None,
+        allow_variable_data_keys: bool = True,
+        streaming: bool = False,
+        param_dict: Optional[dict] = None,
+        **kwargs,
+):
+    assert check_argument_types()
+    if batch_size > 1:
+        raise NotImplementedError("batch decoding is not implemented")
+    if ngpu > 1:
+        raise NotImplementedError("only single GPU decoding is supported")
+
+    logging.basicConfig(
+        level=log_level,
+        format="%(asctime)s (%(module)s:%(lineno)d) %(levelname)s: %(message)s",
+    )
+    logging.info("param_dict: {}".format(param_dict))
+
+    if ngpu >= 1 and torch.cuda.is_available():
+        device = "cuda"
+    else:
+        device = "cpu"
+
+    # 1. Build speech2diar
+    speech2diar_kwargs = dict(
+        diar_train_config=diar_train_config,
+        diar_model_file=diar_model_file,
+        device=device,
+        dtype=dtype,
+        streaming=streaming,
+    )
+    logging.info("speech2diarization_kwargs: {}".format(speech2diar_kwargs))
+    speech2diar = Speech2Diarization.from_pretrained(
+        model_tag=model_tag,
+        **speech2diar_kwargs,
+    )
+    speech2diar.diar_model.eval()
+
+    def output_results_str(results: dict, uttid: str):
+        rst = []
+        mid = uttid.rsplit("-", 1)[0]
+        for key in results:
+            results[key] = [(x[0] / 100, x[1] / 100) for x in results[key]]
+        template = "SPEAKER {} 0 {:.2f} {:.2f} <NA> <NA> {} <NA> <NA>"
+        for spk, segs in results.items():
+            rst.extend([template.format(mid, st, ed, spk) for st, ed in segs])
+
+        return "\n".join(rst)
+
+    def _forward(
+            data_path_and_name_and_type: Sequence[Tuple[str, str, str]] = None,
+            raw_inputs: List[List[Union[np.ndarray, torch.Tensor, str, bytes]]] = None,
+            output_dir_v2: Optional[str] = None,
+            param_dict: Optional[dict] = None,
+    ):
+        # 2. Build data-iterator
+        if data_path_and_name_and_type is None and raw_inputs is not None:
+            if isinstance(raw_inputs, torch.Tensor):
+                raw_inputs = raw_inputs.numpy()
+            data_path_and_name_and_type = [raw_inputs, "speech", "waveform"]
+        loader = EENDOLADiarTask.build_streaming_iterator(
+            data_path_and_name_and_type,
+            dtype=dtype,
+            batch_size=batch_size,
+            key_file=key_file,
+            num_workers=num_workers,
+            preprocess_fn=EENDOLADiarTask.build_preprocess_fn(speech2diar.diar_train_args, False),
+            collate_fn=EENDOLADiarTask.build_collate_fn(speech2diar.diar_train_args, False),
+            allow_variable_data_keys=allow_variable_data_keys,
+            inference=True,
+        )
+
+        # 3. Start for-loop
+        output_path = output_dir_v2 if output_dir_v2 is not None else output_dir
+        if output_path is not None:
+            os.makedirs(output_path, exist_ok=True)
+            output_writer = open("{}/result.txt".format(output_path), "w")
+        result_list = []
+        for keys, batch in loader:
+            assert isinstance(batch, dict), type(batch)
+            assert all(isinstance(s, str) for s in keys), keys
+            _bs = len(next(iter(batch.values())))
+            assert len(keys) == _bs, f"{len(keys)} != {_bs}"
+            # batch = {k: v[0] for k, v in batch.items() if not k.endswith("_lengths")}
+
+            results = speech2diar(**batch)
+            # Only supporting batch_size==1
+            key, value = keys[0], output_results_str(results, keys[0])
+            item = {"key": key, "value": value}
+            result_list.append(item)
+            if output_path is not None:
+                output_writer.write(value)
+                output_writer.flush()
+
+        if output_path is not None:
+            output_writer.close()
+
+        return result_list
+
+    return _forward
+
+
+def inference(
+        data_path_and_name_and_type: Sequence[Tuple[str, str, str]],
+        diar_train_config: Optional[str],
+        diar_model_file: Optional[str],
+        output_dir: Optional[str] = None,
+        batch_size: int = 1,
+        dtype: str = "float32",
+        ngpu: int = 0,
+        seed: int = 0,
+        num_workers: int = 1,
+        log_level: Union[int, str] = "INFO",
+        key_file: Optional[str] = None,
+        model_tag: Optional[str] = None,
+        allow_variable_data_keys: bool = True,
+        streaming: bool = False,
+        smooth_size: int = 83,
+        dur_threshold: int = 10,
+        out_format: str = "vad",
+        **kwargs,
+):
+    inference_pipeline = inference_modelscope(
+        diar_train_config=diar_train_config,
+        diar_model_file=diar_model_file,
+        output_dir=output_dir,
+        batch_size=batch_size,
+        dtype=dtype,
+        ngpu=ngpu,
+        seed=seed,
+        num_workers=num_workers,
+        log_level=log_level,
+        key_file=key_file,
+        model_tag=model_tag,
+        allow_variable_data_keys=allow_variable_data_keys,
+        streaming=streaming,
+        smooth_size=smooth_size,
+        dur_threshold=dur_threshold,
+        out_format=out_format,
+        **kwargs,
+    )
+
+    return inference_pipeline(data_path_and_name_and_type, raw_inputs=None)
+
+
+def get_parser():
+    parser = config_argparse.ArgumentParser(
+        description="Speaker verification/x-vector extraction",
+        formatter_class=argparse.ArgumentDefaultsHelpFormatter,
+    )
+
+    # Note(kamo): Use '_' instead of '-' as separator.
+    # '-' is confusing if written in yaml.
+    parser.add_argument(
+        "--log_level",
+        type=lambda x: x.upper(),
+        default="INFO",
+        choices=("CRITICAL", "ERROR", "WARNING", "INFO", "DEBUG", "NOTSET"),
+        help="The verbose level of logging",
+    )
+
+    parser.add_argument("--output_dir", type=str, required=False)
+    parser.add_argument(
+        "--ngpu",
+        type=int,
+        default=0,
+        help="The number of gpus. 0 indicates CPU mode",
+    )
+    parser.add_argument(
+        "--gpuid_list",
+        type=str,
+        default="",
+        help="The visible gpus",
+    )
+    parser.add_argument("--seed", type=int, default=0, help="Random seed")
+    parser.add_argument(
+        "--dtype",
+        default="float32",
+        choices=["float16", "float32", "float64"],
+        help="Data type",
+    )
+    parser.add_argument(
+        "--num_workers",
+        type=int,
+        default=1,
+        help="The number of workers used for DataLoader",
+    )
+
+    group = parser.add_argument_group("Input data related")
+    group.add_argument(
+        "--data_path_and_name_and_type",
+        type=str2triple_str,
+        required=False,
+        action="append",
+    )
+    group.add_argument("--key_file", type=str_or_none)
+    group.add_argument("--allow_variable_data_keys", type=str2bool, default=False)
+
+    group = parser.add_argument_group("The model configuration related")
+    group.add_argument(
+        "--diar_train_config",
+        type=str,
+        help="diarization training configuration",
+    )
+    group.add_argument(
+        "--diar_model_file",
+        type=str,
+        help="diarization model parameter file",
+    )
+    group.add_argument(
+        "--dur_threshold",
+        type=int,
+        default=10,
+        help="The threshold for short segments in number frames"
+    )
+    parser.add_argument(
+        "--smooth_size",
+        type=int,
+        default=83,
+        help="The smoothing window length in number frames"
+    )
+    group.add_argument(
+        "--model_tag",
+        type=str,
+        help="Pretrained model tag. If specify this option, *_train_config and "
+             "*_file will be overwritten",
+    )
+    parser.add_argument(
+        "--batch_size",
+        type=int,
+        default=1,
+        help="The batch size for inference",
+    )
+    parser.add_argument("--streaming", type=str2bool, default=False)
+
+    return parser
+
+
+def main(cmd=None):
+    print(get_commandline_args(), file=sys.stderr)
+    parser = get_parser()
+    args = parser.parse_args(cmd)
+    kwargs = vars(args)
+    kwargs.pop("config", None)
+    logging.info("args: {}".format(kwargs))
+    if args.output_dir is None:
+        jobid, n_gpu = 1, 1
+        gpuid = args.gpuid_list.split(",")[jobid - 1]
+    else:
+        jobid = int(args.output_dir.split(".")[-1])
+        n_gpu = len(args.gpuid_list.split(","))
+        gpuid = args.gpuid_list.split(",")[(jobid - 1) % n_gpu]
+    os.environ["CUDA_DEVICE_ORDER"] = "PCI_BUS_ID"
+    os.environ["CUDA_VISIBLE_DEVICES"] = gpuid
+    results_list = inference(**kwargs)
+    for results in results_list:
+        print("{} {}".format(results["key"], results["value"]))
+
+
+if __name__ == "__main__":
+    main()