diff --git a/0047-reduce-struct-pbuf-size.patch b/0047-reduce-struct-pbuf-size.patch
new file mode 100644
index 0000000000000000000000000000000000000000..fed1ba50b8a450943d75ff9406c08df6fa283e84
--- /dev/null
+++ b/0047-reduce-struct-pbuf-size.patch
@@ -0,0 +1,25 @@
+From 5527e02b7ae7f27db8964ad55747326b98e33634 Mon Sep 17 00:00:00 2001
+From: wu-changsheng <wuchangsheng2@huawei.com>
+Date: Wed, 21 Dec 2022 22:47:04 +0800
+Subject: [PATCH] reduce struct pbuf size
+
+---
+ src/include/lwip/pbuf.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/include/lwip/pbuf.h b/src/include/lwip/pbuf.h
+index 380ac8e..1124408 100644
+--- a/src/include/lwip/pbuf.h
++++ b/src/include/lwip/pbuf.h
+@@ -229,7 +229,7 @@ struct pbuf {
+   u64_t l3_len:9;
+   /* < L4 (TCP/UDP) Header Length. */
+   u64_t l4_len:8;
+-  u16_t header_off;
++  u8_t header_off;
+   u8_t rexmit;
+   u8_t in_write;
+   u8_t head;
+-- 
+2.23.0
+
diff --git a/lwip.spec b/lwip.spec
index c782db1608b1a7abb0690be2d636b20da0cab3f6..3aec73dccef818be01fceddea1dfee684f6609f2 100644
--- a/lwip.spec
+++ b/lwip.spec
@@ -4,7 +4,7 @@
 Summary: lwip is a small independent implementation of the TCP/IP protocol suite
 Name:    lwip
 Version: 2.1.3
-Release: 36
+Release: 37
 License: BSD
 URL:     http://savannah.nongnu.org/projects/lwip/
 Source0: http://download.savannah.nongnu.org/releases/lwip/%{name}-%{version}.zip
@@ -58,6 +58,7 @@ Patch9042:  0043-add-prefetch.patch
 Patch9043:  0044-skip-unnecessary-tcp_route.patch
 Patch9044:  0045-add-variable-in-struct-sock.patch
 Patch9045:  0046-add-dataack-when-recv-too-many-acks-with-data.patch
+Patch9046:  0047-reduce-struct-pbuf-size.patch
 
 BuildRequires: gcc-c++ dos2unix dpdk-devel
 
@@ -120,6 +121,7 @@ find %{_builddir}/%{name}-%{version} -type f -exec dos2unix -q {} \;
 %patch9043 -p1
 %patch9044 -p1
 %patch9045 -p1
+%patch9046 -p1
 
 %build
 cd %{_builddir}/%{name}-%{version}/src
@@ -135,6 +137,9 @@ cd %{_builddir}/%{name}-%{version}/src
 %{_libdir}/liblwip.a
 
 %changelog
+* Wed Dec 21 2022 wuchangsheng<wuchangsheng2@huawei.com> - 2.1.3-37
+- reduce struct pbuf size
+
 * Wed Dec 21 2022 kircher<majun65@huawei.com> - 2.1.3-36
 - do not update cwnd when send dataack