diff --git a/adc-da-base/src/main/java/com/adc/da/util/WaterMarkUtil.java b/adc-da-base/src/main/java/com/adc/da/util/WaterMarkUtil.java
index 24917631..34575906 100644
--- a/adc-da-base/src/main/java/com/adc/da/util/WaterMarkUtil.java
+++ b/adc-da-base/src/main/java/com/adc/da/util/WaterMarkUtil.java
@@ -49,7 +49,7 @@ public class WaterMarkUtil {
                 // set Transparency
                 PdfGState gs = new PdfGState();
                 // 设置透明度为0.2
-                gs.setFillOpacity(0.3f);
+                gs.setFillOpacity(0.25f);
                 under.setGState(gs);
                 under.restoreState();
                 under.beginText();