diff --git a/xxl-job-admin/src/main/resources/xxl-job-admin.properties b/xxl-job-admin/src/main/resources/xxl-job-admin.properties
index f8a53f17..40f4c236 100644
--- a/xxl-job-admin/src/main/resources/xxl-job-admin.properties
+++ b/xxl-job-admin/src/main/resources/xxl-job-admin.properties
@@ -1,6 +1,6 @@
-### xxl-job db
+### xxl-job db  (use & replace & in xml)
 xxl.job.db.driverClass=com.mysql.jdbc.Driver
-xxl.job.db.url=jdbc:mysql://localhost:3306/xxl-job?useUnicode=true&characterEncoding=UTF-8
+xxl.job.db.url=jdbc:mysql://localhost:3306/xxl-job?useUnicode=true&characterEncoding=UTF-8
 xxl.job.db.user=root
 xxl.job.db.password=root_pwd
 
diff --git a/xxl-job-executor-example/src/main/resources/xxl-job-executor.properties b/xxl-job-executor-example/src/main/resources/xxl-job-executor.properties
index d0b1d666..769c72e0 100644
--- a/xxl-job-executor-example/src/main/resources/xxl-job-executor.properties
+++ b/xxl-job-executor-example/src/main/resources/xxl-job-executor.properties
@@ -1,6 +1,6 @@
 ### xxl-job db
 xxl.job.db.driverClass=com.mysql.jdbc.Driver
-xxl.job.db.url=jdbc:mysql://localhost:3306/xxl-job?useUnicode=true&characterEncoding=UTF-8
+xxl.job.db.url=jdbc:mysql://localhost:3306/xxl-job?useUnicode=true&characterEncoding=UTF-8
 xxl.job.db.user=root
 xxl.job.db.password=root_pwd