diff --git a/0001-replace-obsolete-pngmath-with-imgmath.patch b/0001-replace-obsolete-pngmath-with-imgmath.patch
new file mode 100644
index 0000000000000000000000000000000000000000..796f0de289df0748036d80e1e35046062e56cbf6
--- /dev/null
+++ b/0001-replace-obsolete-pngmath-with-imgmath.patch
@@ -0,0 +1,26 @@
+diff --git a/kitchen2/docs/conf.py b/kitchen2/docs/conf.py
+index 5885d48..b699d95 100644
+--- a/kitchen2/docs/conf.py
++++ b/kitchen2/docs/conf.py
+@@ -25,7 +25,7 @@ import kitchen.release
+ 
+ # Add any Sphinx extension module names here, as strings. They can be extensions
+ # coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
+-extensions = ['sphinx.ext.autodoc', 'sphinx.ext.doctest', 'sphinx.ext.intersphinx', 'sphinx.ext.todo', 'sphinx.ext.coverage', 'sphinx.ext.pngmath', 'sphinx.ext.ifconfig']
++extensions = ['sphinx.ext.autodoc', 'sphinx.ext.doctest', 'sphinx.ext.intersphinx', 'sphinx.ext.todo', 'sphinx.ext.coverage', 'sphinx.ext.imgmath', 'sphinx.ext.ifconfig']
+ 
+ # Add any paths that contain templates here, relative to this directory.
+ templates_path = ['_templates']
+diff --git a/kitchen3/docs/conf.py b/kitchen3/docs/conf.py
+index 5b70a39..fdc0a3b 100644
+--- a/kitchen3/docs/conf.py
++++ b/kitchen3/docs/conf.py
+@@ -25,7 +25,7 @@ import kitchen.release
+ 
+ # Add any Sphinx extension module names here, as strings. They can be extensions
+ # coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
+-extensions = ['sphinx.ext.autodoc', 'sphinx.ext.doctest', 'sphinx.ext.intersphinx', 'sphinx.ext.todo', 'sphinx.ext.coverage', 'sphinx.ext.pngmath', 'sphinx.ext.ifconfig']
++extensions = ['sphinx.ext.autodoc', 'sphinx.ext.doctest', 'sphinx.ext.intersphinx', 'sphinx.ext.todo', 'sphinx.ext.coverage', 'sphinx.ext.imgmath', 'sphinx.ext.ifconfig']
+ 
+ # Add any paths that contain templates here, relative to this directory.
+ templates_path = ['_templates']
diff --git a/python-kitchen.spec b/python-kitchen.spec
index fdb9a1abd7faff0d9534f1ac4fd100c26f892ebe..fd9487c4ac6ca68e00adeed3646b9e29f6daa569 100644
--- a/python-kitchen.spec
+++ b/python-kitchen.spec
@@ -1,6 +1,6 @@
 Name:           python-kitchen
 Version:        1.2.6
-Release:        1
+Release:        2
 Summary:        Useful snippets of python code
 License:        LGPLv2+
 URL:            https://pypi.python.org/pypi/kitchen/
@@ -14,6 +14,8 @@ BuildRequires:  python3-sphinx
 
 Requires:       python2-chardet
 
+Patch0: 0001-replace-obsolete-pngmath-with-imgmath.patch
+
 %description
 kitchen comprising gettext easy to use, easy to unicode text processing functions, and for write
 code modules but requires python-2.7 running on python-2.3 compatibility module.
@@ -94,6 +96,9 @@ popd
 %doc {kitchen2,kitchen3}/docs/* html COPYING COPYING.LESSER
 
 %changelog
+* Mon Sep 21 2020 tianwei <tianwei12@huawei.com> - 1.2.6-2
+- replace obsolete pngmath with imgmath
+
 * Sat Feb 15 2020 openEuler Buildteam <buildteam@openeuler.org> - 1.2.6-1
 - Update to 1.2.6 and enable python3 test