diff --git a/entry/src/main/java/com/sxu/shadowdrawabledemo/slice/RecycleExampleSlice.java b/entry/src/main/java/com/sxu/shadowdrawabledemo/slice/RecycleExampleSlice.java
index d2fdc4c14699e321c2496e1d03612447cc6acfa7..c857b73dce35c7834f6e307916b8dc2903b4d319 100644
--- a/entry/src/main/java/com/sxu/shadowdrawabledemo/slice/RecycleExampleSlice.java
+++ b/entry/src/main/java/com/sxu/shadowdrawabledemo/slice/RecycleExampleSlice.java
@@ -8,9 +8,10 @@ import ohos.agp.components.*;
 import ohos.agp.utils.Color;
 import ohos.agp.utils.TextAlignment;
 import ohos.agp.window.service.DisplayManager;
+
+import java.security.SecureRandom;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.Random;
 
 /*******************************************************************************
  * Description:
@@ -76,7 +77,7 @@ public class RecycleExampleSlice extends Fraction {
                 text.setWidth(WIDTH / PROPORTION);
                 text.setTextColor(Color.WHITE);
                 text.setTextSize(TEXT_SIZE);
-                Random random = new Random();
+                SecureRandom random = new SecureRandom();
                 text.setMinHeight((int) (HEIGHT * PROPORTION + random.nextFloat() * RANDOM_PROPORTION));
                 ShadowDrawable.setShadowDrawable(text, Color.getIntColor("#2979FF"), SHAPERADIUS * PROPORTION,
                         Color.getIntColor("#ee7C4DFF"), padding, 0, 0);