diff --git a/modules/image/Image_gan/style_transfer/U2Net_Portrait/README.md b/modules/image/Image_gan/style_transfer/U2Net_Portrait/README.md
index e2724618d42095ebf05e410ece2ced9b06c831d6..4175ec598c6e02a65a744a9b26dd7c00aa2efd43 100644
--- a/modules/image/Image_gan/style_transfer/U2Net_Portrait/README.md
+++ b/modules/image/Image_gan/style_transfer/U2Net_Portrait/README.md
@@ -50,16 +50,16 @@
 
 ## 三、模型API预测
 
-- ### 1、代码示例
+- ### 1、预测代码示例
 
   - ```python
     import paddlehub as hub
     import cv2
 
     model = hub.Module(name="U2Net_Portrait")
-    result = model.Cartoon_GEN(images=[cv2.imread('/PATH/TO/IMAGE')])
+    result = model.Portrait_GEN(images=[cv2.imread('/PATH/TO/IMAGE')])
     # or
-    # result = model.Cartoon_GEN(paths=['/PATH/TO/IMAGE'])
+    # result = model.Portrait_GEN(paths=['/PATH/TO/IMAGE'])
     ```
 
 - ### 2、API
diff --git a/paddlehub/utils/pypi.py b/paddlehub/utils/pypi.py
index 8f0f3c68c4a254138b0d647b81d484803735ede6..6a6d76535f25b13e46448e72eef7852c9d9f9654 100644
--- a/paddlehub/utils/pypi.py
+++ b/paddlehub/utils/pypi.py
@@ -15,10 +15,11 @@
 
 import os
 import subprocess
+import sys
 from typing import IO
 
 from paddlehub.utils.utils import Version
-from paddlehub.utils.io import discard_oe, typein
+from paddlehub.utils.io import discard_oe
 
 
 def get_installed_packages() -> dict:
@@ -40,13 +41,14 @@ def check(package: str, version: str = '') -> bool:
     return pdict[package].match(version)
 
 
-def install(package: str, version: str = '', upgrade: bool = False, ostream: IO = None, estream: IO = None) -> bool:
+def install(package: str, version: str = '', upgrade: bool = False, ostream: IO = sys.stdout,
+            estream: IO = sys.stderr) -> bool:
     '''Install the python package.'''
     package = package.replace(' ', '')
     if version:
         package = '{}=={}'.format(package, version)
 
-    cmd = 'pip install "{}"'.format(package)
+    cmd = '{} -m pip install "{}"'.format(sys.executable, package)
 
     if upgrade:
         cmd += ' --upgrade'
@@ -59,9 +61,9 @@ def install(package: str, version: str = '', upgrade: bool = False, ostream: IO
     return result == 0
 
 
-def install_from_file(file: str, ostream: IO = None, estream: IO = None) -> bool:
+def install_from_file(file: str, ostream: IO = sys.stdout, estream: IO = sys.stderr) -> bool:
     '''Install the python package.'''
-    cmd = 'pip install -r {}'.format(file)
+    cmd = '{} -m pip install -r {}'.format(sys.executable, file)
 
     result, content = subprocess.getstatusoutput(cmd)
     if result:
@@ -71,14 +73,13 @@ def install_from_file(file: str, ostream: IO = None, estream: IO = None) -> bool
     return result == 0
 
 
-def uninstall(package: str, ostream: IO = None, estream: IO = None) -> bool:
+def uninstall(package: str, ostream: IO = sys.stdout, estream: IO = sys.stderr) -> bool:
     '''Uninstall the python package.'''
-    with typein('y'):
-        # type in 'y' to confirm the uninstall operation
-        cmd = 'pip uninstall {}'.format(package)
-        result, content = subprocess.getstatusoutput(cmd)
-        if result:
-            estream.write(content)
-        else:
-            ostream.write(content)
+    # type in 'y' to confirm the uninstall operation
+    cmd = '{} -m pip uninstall {} -y'.format(sys.executable, package)
+    result, content = subprocess.getstatusoutput(cmd)
+    if result:
+        estream.write(content)
+    else:
+        ostream.write(content)
     return result == 0
diff --git a/requirements.txt b/requirements.txt
index 3990fb4bd0547cd4001784e0d74bbe98995421ac..f95cfe689940dbd35f750b4267f2804d8a6fe53b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ matplotlib
 opencv-python
 packaging
 paddle2onnx >= 0.5.1
-paddlenlp >= 2.0.0rc5
+paddlenlp >= 2.0.0
 Pillow
 pyyaml
 pyzmq