diff --git a/deepmd_pt/utils/dp_random.py b/deepmd_pt/utils/dp_random.py
index 3062715..81ecead 100644
--- a/deepmd_pt/utils/dp_random.py
+++ b/deepmd_pt/utils/dp_random.py
@@ -1,61 +1,13 @@
-import numpy as np
-
-
-_RANDOM_GENERATOR = np.random.RandomState()
-
-
-def choice(a: np.ndarray, p: np.ndarray = None, **kwargs):
-    """Generates a random sample from a given 1-D array.
-
-    Parameters
-    ----------
-    a : np.ndarray
-        A random sample is generated from its elements.
-    p : np.ndarray
-        The probabilities associated with each entry in a.
-
-    Returns
-    -------
-    np.ndarray
-        arrays with results and their shapes
-    """
-    return _RANDOM_GENERATOR.choice(a, p=p, **kwargs)
-
-
-def random(size=None):
-    """Return random floats in the half-open interval [0.0, 1.0).
-
-    Parameters
-    ----------
-    size
-        Output shape.
-
-    Returns
-    -------
-    np.ndarray
-        Arrays with results and their shapes.
-    """
-    print('DP Called to random')
-    return _RANDOM_GENERATOR.random_sample(size)
-
-
-def seed(val: int = None):
-    """Seed the generator.
-
-    Parameters
-    ----------
-    val : int
-        Seed.
-    """
-    _RANDOM_GENERATOR.seed(val)
-
-
-def shuffle(x: np.ndarray):
-    """Modify a sequence in-place by shuffling its contents.
-
-    Parameters
-    ----------
-    x : np.ndarray
-        The array or list to be shuffled.
-    """
-    _RANDOM_GENERATOR.shuffle(x)
+from deepmd_utils.utils.random import (
+    choice,
+    random,
+    seed,
+    shuffle,
+)
+
+__all__ = [
+    "choice",
+    "random",
+    "seed",
+    "shuffle",
+]
\ No newline at end of file
diff --git a/deepmd_pt/utils/plugin.py b/deepmd_pt/utils/plugin.py
index 2a77b74..dbc0237 100644
--- a/deepmd_pt/utils/plugin.py
+++ b/deepmd_pt/utils/plugin.py
@@ -1,95 +1,15 @@
 # SPDX-License-Identifier: LGPL-3.0-or-later
 """Base of plugin systems."""
-# copied from https://github.com/deepmodeling/dpdata/blob/a3e76d75de53f6076254de82d18605a010dc3b00/dpdata/plugin.py
-
-from abc import (
-    ABCMeta,
-)
-from typing import (
-    Callable,
+from deepmd_utils.utils.plugin import (
+    Plugin,
+    PluginVariant,
+    VariantABCMeta,
+    VariantMeta,
 )
 
-
-class Plugin:
-    """A class to register and restore plugins.
-
-    Attributes
-    ----------
-    plugins : Dict[str, object]
-        plugins
-
-    Examples
-    --------
-    >>> plugin = Plugin()
-    >>> @plugin.register("xx")
-        def xxx():
-            pass
-    >>> print(plugin.plugins['xx'])
-    """
-
-    def __init__(self):
-        self.plugins = {}
-
-    def __add__(self, other) -> "Plugin":
-        self.plugins.update(other.plugins)
-        return self
-
-    def register(self, key: str) -> Callable[[object], object]:
-        """Register a plugin.
-
-        Parameters
-        ----------
-        key : str
-            key of the plugin
-
-        Returns
-        -------
-        Callable[[object], object]
-            decorator
-        """
-
-        def decorator(object: object) -> object:
-            self.plugins[key] = object
-            return object
-
-        return decorator
-
-    def get_plugin(self, key) -> object:
-        """Visit a plugin by key.
-
-        Parameters
-        ----------
-        key : str
-            key of the plugin
-
-        Returns
-        -------
-        object
-            the plugin
-        """
-        return self.plugins[key]
-
-
-class VariantMeta:
-    def __call__(cls, *args, **kwargs):
-        """Remove `type` and keys that starts with underline."""
-        obj = cls.__new__(cls, *args, **kwargs)
-        kwargs.pop("type", None)
-        to_pop = []
-        for kk in kwargs:
-            if kk[0] == "_":
-                to_pop.append(kk)
-        for kk in to_pop:
-            kwargs.pop(kk, None)
-        obj.__init__(*args, **kwargs)
-        return obj
-
-
-class VariantABCMeta(VariantMeta, ABCMeta):
-    pass
-
-
-class PluginVariant(metaclass=VariantABCMeta):
-    """A class to remove `type` from input arguments."""
-
-    pass
+__all__ = [
+    "Plugin",
+    "VariantMeta",
+    "VariantABCMeta",
+    "PluginVariant",
+]