diff --git a/.settings/org.eclipse.core.resources.prefs b/.settings/org.eclipse.core.resources.prefs
index 6f22d22..a7c1f80 100644
--- a/.settings/org.eclipse.core.resources.prefs
+++ b/.settings/org.eclipse.core.resources.prefs
@@ -4,6 +4,7 @@ encoding//Demo/CircleLine.py=utf-8
 encoding//Demo/EmbedWindow.py=utf-8
 encoding//Demo/FacePoints.py=utf-8
 encoding//Demo/FollowWindow.py=utf-8
+encoding//Demo/FramelessDialog.py=utf-8
 encoding//Demo/FramelessWindow.py=utf-8
 encoding//Demo/Lib/Application.py=utf-8
 encoding//Demo/Lib/FramelessWindow.py=utf-8
diff --git a/Demo/FramelessDialog.py b/Demo/FramelessDialog.py
new file mode 100644
index 0000000..4f3d551
--- /dev/null
+++ b/Demo/FramelessDialog.py
@@ -0,0 +1,85 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""
+Created on 2019年4月19日
+@author: Irony
+@site: https://pyqt5.com https://github.com/892768447
+@email: 892768447@qq.com
+@file: FramelessDialog
+@description: 无边框圆角对话框 
+"""
+from PyQt5.QtCore import Qt, QSize, QTimer
+from PyQt5.QtWidgets import QDialog, QVBoxLayout, QWidget,\
+    QGraphicsDropShadowEffect, QPushButton, QGridLayout, QSpacerItem,\
+    QSizePolicy
+
+
+__Author__ = "Irony"
+__Copyright__ = 'Copyright (c) 2019 Irony'
+__Version__ = 1.0
+
+Stylesheet = """
+#Custom_Widget {
+    background: white;
+    border-radius: 10px;
+}
+
+#closeButton {
+    min-width: 36px;
+    min-height: 36px;
+    font-family: "Webdings";
+    qproperty-text: "r";
+    border-radius: 10px;
+}
+#closeButton:hover {
+    color: white;
+    background: red;
+}
+"""
+
+
+class Dialog(QDialog):
+
+    def __init__(self, *args, **kwargs):
+        super(Dialog, self).__init__(*args, **kwargs)
+        self.setObjectName('Custom_Dialog')
+        self.setWindowFlags(self.windowFlags() | Qt.FramelessWindowHint)
+        self.setAttribute(Qt.WA_TranslucentBackground, True)
+        self.setStyleSheet(Stylesheet)
+        self.initUi()
+        # 添加阴影
+        effect = QGraphicsDropShadowEffect(self)
+        effect.setBlurRadius(12)
+        effect.setOffset(0, 0)
+        effect.setColor(Qt.gray)
+        self.setGraphicsEffect(effect)
+
+    def initUi(self):
+        layout = QVBoxLayout(self)
+        # 重点： 这个widget作为背景和圆角
+        self.widget = QWidget(self)
+        self.widget.setObjectName('Custom_Widget')
+        layout.addWidget(self.widget)
+
+        # 在widget中添加ui
+        layout = QGridLayout(self.widget)
+        layout.addItem(QSpacerItem(
+            40, 20, QSizePolicy.Expanding, QSizePolicy.Minimum), 0, 0)
+        layout.addWidget(QPushButton(
+            'r', self, clicked=self.accept, objectName='closeButton'), 0, 1)
+        layout.addItem(QSpacerItem(20, 40, QSizePolicy.Minimum,
+                                   QSizePolicy.Expanding), 1, 0)
+
+    def sizeHint(self):
+        return QSize(600, 400)
+
+
+if __name__ == '__main__':
+    import sys
+    from PyQt5.QtWidgets import QApplication
+    app = QApplication(sys.argv)
+    w = Dialog()
+    w.exec_()
+    QTimer.singleShot(200, app.quit)
+    sys.exit(app.exec_())
diff --git a/Demo/README.md b/Demo/README.md
index c983c2f..b0b87ed 100644
--- a/Demo/README.md
+++ b/Demo/README.md
@@ -17,6 +17,7 @@
   - [人脸特征点](#15、人脸特征点)
   - [使用Threading](#16、使用Threading)
   - [背景连线动画](#17、背景连线动画)
+  - [无边框圆角对话框](#18、无边框圆角对话框)
 
 ## 1、重启窗口Widget
 [运行 RestartWindow.py](RestartWindow.py)
@@ -170,4 +171,14 @@ PyQt 结合 Opencv 进行人脸检测；
 
 主要参考 [背景连线动画.html](Data/背景连线动画.html)
 
-![CircleLine](ScreenShot/CircleLine.gif)
\ No newline at end of file
+![CircleLine](ScreenShot/CircleLine.gif)
+
+
+## 18、无边框圆角对话框
+[运行 FramelessDialog.py](FramelessDialog.py)
+
+1. 通过设置 `self.setWindowFlags(self.windowFlags() | Qt.FramelessWindowHint)` 和 `self.setAttribute(Qt.WA_TranslucentBackground, True)` 达到无边框和背景透明
+2. 在QDialog中放置一个QWidget作为背景和圆角
+3. 在QWidget中放置其他内容
+
+![FramelessDialog](ScreenShot/FramelessDialog.png)
\ No newline at end of file
diff --git a/Demo/ScreenShot/FramelessDialog.png b/Demo/ScreenShot/FramelessDialog.png
new file mode 100644
index 0000000..a5d24a3
Binary files /dev/null and b/Demo/ScreenShot/FramelessDialog.png differ
diff --git a/README.md b/README.md
index 8bc28ba..9caed8c 100644
--- a/README.md
+++ b/README.md
@@ -168,6 +168,7 @@ https://pyqt5.com 社区是专门针对PyQt5学习和提升开设的博客网站
   - [嵌入外部窗口](Demo/EmbedWindow.py)
   - [简单跟随其它窗口](Demo/FollowWindow.py)
   - [简单探测窗口和放大截图](Demo/ProbeWindow.py)
+  - [无边框圆角对话框](Demo/FramelessDialog.py)
   - [无边框自定义标题栏窗口](Demo/FramelessWindow.py)
   - [右下角弹出框](Demo/WindowNotify.py)
   - [程序重启](Demo/AutoRestart.py)