diff --git a/pyserial.spec b/pyserial.spec
index 42671d6..1b30af6 100644
--- a/pyserial.spec
+++ b/pyserial.spec
@@ -1,12 +1,12 @@
 Name: pyserial
 Version: 3.4
-Release: 3
+Release: 4
 Summary: Python serial port access library.
 License: BSD license
 URL: https://github.com/pyserial/pyserial
 Source0: https://github.com/%{name}/%{name}/archive/v3.4.tar.gz
 
-BuildRequires: python2-devel python3-devel
+BuildRequires: python3-devel
 
 Obsoletes: pyserial < %{version}-%{release}
 Provides: pyserial%{?_isa} = %{version}-%{release}
@@ -18,17 +18,6 @@ This module encapsulates the access for the serial port. It provides
 backends for Python running on Windows, OSX, Linux,BSD (possibly any POSIX compliant system)
 and IronPython. The module named "serial" automatically selects the appropriate backend.
 
-%package -n python2-%{name}
-Summary: Python2 serial port access library.
-%{?python_provide:%python_provide python2-%{name}}
-Obsoletes: pyserial < %{version}-%{release}
-Provides: pyserial%{?_isa} = %{version}-%{release}
-
-%description -n python2-%{name}
-This module encapsulates the access for the serial port. It provides
-backends for Python2 running on Windows, OSX, Linux,BSD (possibly any POSIX compliant system)
-and IronPython. The module named "serial" automatically selects the appropriate backend.
-
 %package -n python3-%{name}
 Summary: Python3 serial port access library.
 
@@ -44,7 +33,6 @@ rm -rf %{py3dir}
 cp -a . %{py3dir}
 
 %build
-CFLAGS="$RPM_OPT_FLAGS" %{__python2} setup.py build
 pushd %{py3dir}
 CFLAGS="$RPM_OPT_FLAGS" %{__python3} setup.py build
 popd
@@ -57,9 +45,6 @@ install -D -m 0755 %{buildroot}/%{_bindir}/miniterm.py %{buildroot}/%{_bindir}/m
 rm -rf %{buildroot}/%{_bindir}/miniterm.py
 ln -sf %{_bindir}/miniterm-3.py %{buildroot}/%{_bindir}/miniterm-%{python3_version}.py
 popd
-%{__python2} setup.py install -O1 --skip-build --root %{buildroot}
-install -D -m 0755 %{buildroot}/%{_bindir}/miniterm.py %{buildroot}/%{_bindir}/miniterm-2.py
-ln -sf %{_bindir}/miniterm-2.py %{buildroot}/%{_bindir}/miniterm-%{python2_version}.py
 
 %check
 
@@ -71,14 +56,6 @@ ln -sf %{_bindir}/miniterm-2.py %{buildroot}/%{_bindir}/miniterm-%{python2_versi
 
 %postun
 
-%files -n python2-%{name}
-%doc CHANGES.rst README.rst examples
-%license LICENSE.txt
-%{_bindir}/miniterm.py
-%{_bindir}/miniterm-2.py
-%{_bindir}/miniterm-%{python2_version}.py
-%{python2_sitelib}/*
-
 %files -n python3-%{name}
 %doc CHANGES.rst README.rst examples
 %license LICENSE.txt
@@ -87,6 +64,12 @@ ln -sf %{_bindir}/miniterm-2.py %{buildroot}/%{_bindir}/miniterm-%{python2_versi
 %{python3_sitelib}/*
 
 %changelog
+* Fri Oct 30 2020 wangjie<wangjie294@huawei.com> -3.4-4
+- Type:NA
+- ID:NA
+- SUG:NA
+- DESC:remove python2
+
 * Tue Mar 31 2020 kangenbo <kangenbo@huawei.com> - 3.4-3
 - Type:enhancement
 - ID:NA