diff --git a/src/app/main.cpp b/src/app/main.cpp
index 9c8e59b..26e63dd 100644
--- a/src/app/main.cpp
+++ b/src/app/main.cpp
@@ -403,6 +403,7 @@ void buildWorkbench(QMainWindow& window, geopro::data::LocalSampleRepository& re
     auto* anomalyHint = new QLabel(vtkWidget);
     anomalyHint->setObjectName(QStringLiteral("anomalyHint"));
     anomalyHint->setAttribute(Qt::WA_TransparentForMouseEvents);
+    anomalyHint->setAttribute(Qt::WA_TranslucentBackground);  // 圆角外透明(否则四角露白底)
     geopro::app::applyTokenizedStyleSheet(
         anomalyHint,
         QStringLiteral("QLabel#anomalyHint{background:rgba(10,18,30,0.85);color:#E6ECF5;"