diff --git a/src/com/casic/swing/ui/TimeGuardNtp.form b/src/com/casic/swing/ui/TimeGuardNtp.form
index 31eb394..cdba6f6 100644
--- a/src/com/casic/swing/ui/TimeGuardNtp.form
+++ b/src/com/casic/swing/ui/TimeGuardNtp.form
@@ -120,7 +120,7 @@
         <properties>
           <alignmentY value="0.0"/>
           <font size="14"/>
-          <text value="同步周期（小时）："/>
+          <text value="同步周期（分钟）："/>
         </properties>
       </component>
       <component id="84647" class="javax.swing.JComboBox" binding="periodComboBox">

diff --git a/src/com/casic/swing/ui/TimeGuardNtp.form b/src/com/casic/swing/ui/TimeGuardNtp.form
index 31eb394..cdba6f6 100644
--- a/src/com/casic/swing/ui/TimeGuardNtp.form
+++ b/src/com/casic/swing/ui/TimeGuardNtp.form
@@ -120,7 +120,7 @@
         <properties>
           <alignmentY value="0.0"/>
           <font size="14"/>
-          <text value="同步周期（小时）："/>
+          <text value="同步周期（分钟）："/>
         </properties>
       </component>
       <component id="84647" class="javax.swing.JComboBox" binding="periodComboBox">
diff --git a/src/com/casic/swing/ui/TimeGuardNtp.java b/src/com/casic/swing/ui/TimeGuardNtp.java
index 0052ae1..6df5b55 100644
--- a/src/com/casic/swing/ui/TimeGuardNtp.java
+++ b/src/com/casic/swing/ui/TimeGuardNtp.java
@@ -34,7 +34,7 @@
     /**
      * 同步周期，单位：小时
      */
-    private final Integer[] PERIOD = {1, 6, 12, 24};
+    private final Integer[] PERIOD = {10, 20, 30};
     private final ScheduledExecutorService executorService = new ScheduledThreadPoolExecutor(
             1, new ThreadFactoryBuilder().setNameFormat("demo-pool-%d").build());
     private boolean hasNtp = false;
@@ -170,7 +170,7 @@
             public void run() {
                 updateView();
             }
-        }, 0, period, TimeUnit.HOURS);
+        }, 0, period, TimeUnit.MINUTES);
     }
 
     private void updateView() {