diff --git a/src/main/java/com/aida/seller/util/ImageWatermarkUtil.java b/src/main/java/com/aida/seller/util/ImageWatermarkUtil.java
index f98ba9f..e23f3cb 100644
--- a/src/main/java/com/aida/seller/util/ImageWatermarkUtil.java
+++ b/src/main/java/com/aida/seller/util/ImageWatermarkUtil.java
@@ -77,9 +77,11 @@ public class ImageWatermarkUtil {
         int width = original.getWidth();
         int height = original.getHeight();
 
-        BufferedImage output = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
+        BufferedImage output = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
         Graphics2D g2d = output.createGraphics();
         try {
+            g2d.setBackground(Color.WHITE);
+            g2d.clearRect(0, 0, width, height);
             g2d.drawImage(original, 0, 0, width, height, null);
 
             int baseFontSize = Math.max(12, (int) (Math.min(width, height) * watermarkProperties.getFontSizeRatio()));
@@ -90,6 +92,7 @@ public class ImageWatermarkUtil {
             g2d.setColor(new Color(rgba[0], rgba[1], rgba[2], rgba.length > 3 ? rgba[3] : 128));
             g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
             g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
+            g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER));
 
             double radians = Math.toRadians(watermarkProperties.getRotationDegrees());
             int stepX = (int) (baseFontSize * watermarkProperties.getSpacingRatioX());