diff --git a/docs/work/certifications/microsoft/microsoft-azure-az-900.md b/docs/work/certifications/microsoft/microsoft-azure-az-900.md
index c4c6f0e..0058d43 100644
--- a/docs/work/certifications/microsoft/microsoft-azure-az-900.md
+++ b/docs/work/certifications/microsoft/microsoft-azure-az-900.md
@@ -17,6 +17,7 @@ AZ-900 的考试比较简单，但也绝对不是简单到什么都不看，随
 | 题库                                             | 备注          |
 |------------------------------------------------|-------------|
 | https://insidethemicrosoftcloud.com/az900quiz/ | 当前这个题库可免费可用 |
+| https://examice.com/exams/microsoft/az-900     | 这个题库更多，但收费  |
 
 ## 概念和定义