diff --git a/README.md b/README.md
index 00213e5..be2178b 100644
--- a/README.md
+++ b/README.md
@@ -50,6 +50,7 @@ patternLock.onSlideListener = object : OnSlideListener {
 |nomalLineColor|正常状态下连线颜色|#00FFFF|
 |errorLineColor|错误状态下连线颜色|#FF0000|
 |lineWidth|连线宽度|8dp|
+|allowRepeat|是否允许点被重复选中|false|
 ## PatternLock方法
 |方法名|描述|
 |---|---|
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 9dba750..878aea3 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -7,6 +7,7 @@
     android:gravity="center"
     tools:context="com.ooftf.patternlock.MainActivity">
     <com.ooftf.pattern.PatternLock
+        app:allowRepeat="true"
         android:id="@+id/patternLock"
         android:padding="18dp"
         android:background="@color/colorPrimary"
diff --git a/lib/src/main/java/com/ooftf/pattern/PatternLock.kt b/lib/src/main/java/com/ooftf/pattern/PatternLock.kt
index e7c3121..fffd2b7 100644
--- a/lib/src/main/java/com/ooftf/pattern/PatternLock.kt
+++ b/lib/src/main/java/com/ooftf/pattern/PatternLock.kt
@@ -28,6 +28,7 @@ class PatternLock : View {
     internal var currentY: Float = 0.toFloat()
     internal var touching = false
     internal var iconSize = 0f
+    private var allowRepeat = false
     /**
      * 错误状态下线的颜色
      */
@@ -72,6 +73,7 @@ class PatternLock : View {
         paintLine.strokeWidth = attributes.getDimension(R.styleable.PatternLock_lineWidth, dip2px(context, 8f).toFloat())
         nomalColor = attributes.getColor(R.styleable.PatternLock_nomalLineColor, Color.parseColor("#00FFFF"));
         errorColor = attributes.getColor(R.styleable.PatternLock_errorLineColor, Color.parseColor("#FF0000"));
+        allowRepeat = attributes.getBoolean(R.styleable.PatternLock_allowRepeat,false)
     }
 
     private fun initPoint() {
@@ -146,7 +148,7 @@ class PatternLock : View {
 
     internal fun intersectPoint(currentX: Float, currentY: Float) {
         points.filter { it.isIntersect(currentX, currentY) }
-                .filter { !selectedPoints.contains(it) }
+                .filter { allowRepeat||!selectedPoints.contains(it)}
                 .forEach {
                     it.state = PointState.SELECT
                     selectedPoints.add(it)
diff --git a/lib/src/main/res/values/attrs.xml b/lib/src/main/res/values/attrs.xml
index 4efcb0f..52cf741 100644
--- a/lib/src/main/res/values/attrs.xml
+++ b/lib/src/main/res/values/attrs.xml
@@ -8,6 +8,7 @@
         <attr name="errorLineColor" format="color"/>
         <attr name="lineWidth" format="dimension"/>
         <attr name="iconSize" format="dimension"/>
+        <attr name="allowRepeat" format="boolean"/>
     </declare-styleable>
 
 </resources>
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