diff --git a/other/download.md b/other/download.md
index 1e109801..65f5f45a 100644
--- a/other/download.md
+++ b/other/download.md
@@ -29,7 +29,12 @@
 
 # C++
 
-<a href="https://pan.baidu.com/s/1VhhqN7oVcrv0KhF32CXRLQ"> <img src="s27023182.jpg" width="150"/> </a> <a href="https://pan.baidu.com/s/1K6xm3YlV53trCxyGR0j_gQ"> <img src="s4436543.jpg" width="150"/> </a> <a href="https://pan.baidu.com/s/10iFqDOHSveJC3VC7dl1vMw"> <img src="s1613283.jpg" width="150"/> </a>
+<a href="https://pan.baidu.com/s/1VhhqN7oVcrv0KhF32CXRLQ"> <img src="s27023182.jpg" width="150"/> </a> <a href="https://pan.baidu.com/s/1u3-QrdnkHo5ScUK84v7C5w"> <img src="s2996168.jpg" width="150"/> </a> <a href="https://pan.baidu.com/s/1K6xm3YlV53trCxyGR0j_gQ"> <img src="s4436543.jpg" width="150"/> </a> <a href="https://pan.baidu.com/s/10iFqDOHSveJC3VC7dl1vMw"> <img src="s1613283.jpg" width="150"/> </a> 
+
+# 工具
+
+<a href="https://pan.baidu.com/s/1zYoS3lB1yCCT-So1YeoRuA"> <img src="s27023182.jpg" width="150"/> </a> <a href="https://pan.baidu.com/s/1ybA1qvjx4p844Pd8zDlx7Q"> <img src="s2794811.jpg" width="150"/> </a>
+
 
 # 编码实践