diff --git a/lib/src/main/java/com/github/wangyiqian/stockchart/StockChart.kt b/lib/src/main/java/com/github/wangyiqian/stockchart/StockChart.kt
index d4da86b..ef3b6f6 100644
--- a/lib/src/main/java/com/github/wangyiqian/stockchart/StockChart.kt
+++ b/lib/src/main/java/com/github/wangyiqian/stockchart/StockChart.kt
@@ -96,6 +96,13 @@ class StockChart @JvmOverloads constructor(context: Context, attrs: AttributeSet
             }
         }
 
+        if (config.modifyKEntitiesFlag) {
+            config.modifyKEntitiesFlag = false
+            onKEntitiesChangedListeners.forEach {
+                it.onModifyKEntities()
+            }
+        }
+
         if (config.appendKEntitiesFlag) {
             config.appendKEntitiesFlag = false
             onKEntitiesChangedListeners.forEach {
diff --git a/lib/src/main/java/com/github/wangyiqian/stockchart/StockChartConfig.kt b/lib/src/main/java/com/github/wangyiqian/stockchart/StockChartConfig.kt
index e51d94f..365b8a2 100644
--- a/lib/src/main/java/com/github/wangyiqian/stockchart/StockChartConfig.kt
+++ b/lib/src/main/java/com/github/wangyiqian/stockchart/StockChartConfig.kt
@@ -32,9 +32,11 @@ class StockChartConfig {
             setKEntities(value, 0, kEntities.size - 1)
         }
 
-    var setKEntitiesFlag = false
+    internal var setKEntitiesFlag = false
 
-    var appendKEntitiesFlag = false
+    internal var modifyKEntitiesFlag = false
+
+    internal var appendKEntitiesFlag = false
 
     // 初始显示区域的起始坐标
     var showStartIndex = 0
@@ -155,13 +157,11 @@ class StockChartConfig {
      * @param showStartIndex    显示区域起点对应数据集合的下标
      * @param showEndIndex      显示区域终点对应数据集合的下标
      */
-    @UiThread
     fun setKEntities(
         kEntities: List<IKEntity>,
         showStartIndex: Int = 0,
         showEndIndex: Int = if (kEntities.isEmpty()) 0 else kEntities.size - 1
     ) {
-        checkMainThread()
         check(showStartIndex <= showEndIndex) { "The value of showStartIndex must be less than showEndIndex." }
         if (kEntities.isNotEmpty()) {
             check(showStartIndex in kEntities.indices && showEndIndex in kEntities.indices) { "The value of showStartIndex and showEndIndex must be in the range of kEntities indexes." }
@@ -173,12 +173,21 @@ class StockChartConfig {
         setKEntitiesFlag = true
     }
 
+    /**
+     * 修改K线数据
+     * @param index 对应下标
+     * @param kEntity 新数据
+     */
+    fun modifyKEntity(index: Int, kEntity: IKEntity) {
+        check(index in 0 until kEntities.size) { "Index $index out of bounds for length ${kEntities.size}" }
+        kEntities[index] = kEntity
+        modifyKEntitiesFlag = true
+    }
+
     /**
      * 追加K线数据
      */
-    @UiThread
     fun appendRightKEntities(kEntities: List<IKEntity>) {
-        checkMainThread()
         if (this.kEntities.isEmpty()) {
             setKEntities(kEntities)
         } else {
@@ -190,9 +199,7 @@ class StockChartConfig {
     /**
      * 追加K线数据
      */
-    @UiThread
     fun appendLeftKEntities(kEntities: List<IKEntity>) {
-        checkMainThread()
         if (this.kEntities.isEmpty()) {
             setKEntities(kEntities)
         } else {
diff --git a/lib/src/main/java/com/github/wangyiqian/stockchart/childchart/base/BaseChildChart.kt b/lib/src/main/java/com/github/wangyiqian/stockchart/childchart/base/BaseChildChart.kt
index 0b13228..5d21099 100644
--- a/lib/src/main/java/com/github/wangyiqian/stockchart/childchart/base/BaseChildChart.kt
+++ b/lib/src/main/java/com/github/wangyiqian/stockchart/childchart/base/BaseChildChart.kt
@@ -129,6 +129,11 @@ abstract class BaseChildChart<C : BaseChildChartConfig> @JvmOverloads constructo
         prepare()
     }
 
+    override fun onModifyKEntities() {
+        onKEntitiesChanged()
+        prepare()
+    }
+
     override fun onAppendKEntities() {
         onKEntitiesChanged()
         prepare()
diff --git a/lib/src/main/java/com/github/wangyiqian/stockchart/entities/Highlight.kt b/lib/src/main/java/com/github/wangyiqian/stockchart/entities/Highlight.kt
index 83bcc04..e10ba13 100644
--- a/lib/src/main/java/com/github/wangyiqian/stockchart/entities/Highlight.kt
+++ b/lib/src/main/java/com/github/wangyiqian/stockchart/entities/Highlight.kt
@@ -17,6 +17,6 @@ package com.github.wangyiqian.stockchart.entities
  * @author wangyiqian E-mail: wangyiqian9891@gmail.com
  * @version 创建时间: 2021/2/6
  */
-class Highlight(
+open class Highlight(
     x: Float = 0f, y: Float = 0f, valueX: Float = 0f, valueY: Float = 0f
 ) : GestureEvent(x, y, valueX, valueY)
\ No newline at end of file
diff --git a/lib/src/main/java/com/github/wangyiqian/stockchart/entities/IKEntity.kt b/lib/src/main/java/com/github/wangyiqian/stockchart/entities/IKEntity.kt
index 4c9edbf..a2d2435 100644
--- a/lib/src/main/java/com/github/wangyiqian/stockchart/entities/IKEntity.kt
+++ b/lib/src/main/java/com/github/wangyiqian/stockchart/entities/IKEntity.kt
@@ -19,14 +19,21 @@ package com.github.wangyiqian.stockchart.entities
  */
 interface IKEntity {
     fun getHighPrice(): Float
+    fun setHighPrice(price: Float)
     fun getLowPrice(): Float
+    fun setLowPrice(price: Float)
     fun getOpenPrice(): Float
+    fun setOpenPrice(price: Float)
     fun getClosePrice(): Float
+    fun setClosePrice(price: Float)
     fun getVolume(): Long
+    fun setVolume(volume: Long)
     fun getTime(): Long
+    fun setTime(time: Long)
 
     /**
      * 分时均线价格
      */
     fun getAvgPrice(): Float?
+    fun setAvgPrice(price: Float?)
 }
\ No newline at end of file
diff --git a/lib/src/main/java/com/github/wangyiqian/stockchart/entities/KEntity.kt b/lib/src/main/java/com/github/wangyiqian/stockchart/entities/KEntity.kt
index 9afaf05..c057ac7 100644
--- a/lib/src/main/java/com/github/wangyiqian/stockchart/entities/KEntity.kt
+++ b/lib/src/main/java/com/github/wangyiqian/stockchart/entities/KEntity.kt
@@ -20,26 +20,54 @@ package com.github.wangyiqian.stockchart.entities
  * @version 创建时间: 2021/1/28
  */
 open class KEntity(
-    private val highPrice: Float,
-    private val lowPrice: Float,
-    private val openPrice: Float,
-    private val closePrice: Float,
-    private val volume: Long,
-    private val time: Long,
-    private val avgPrice: Float? = null
+    private var highPrice: Float,
+    private var lowPrice: Float,
+    private var openPrice: Float,
+    private var closePrice: Float,
+    private var volume: Long,
+    private var time: Long,
+    private var avgPrice: Float? = null
 ) : IKEntity {
 
     override fun getHighPrice() = highPrice
 
+    override fun setHighPrice(price: Float) {
+        this.highPrice = price
+    }
+
     override fun getLowPrice() = lowPrice
 
+    override fun setLowPrice(price: Float) {
+        this.lowPrice = price
+    }
+
     override fun getOpenPrice() = openPrice
 
+    override fun setOpenPrice(price: Float) {
+        this.openPrice = price
+    }
+
     override fun getClosePrice() = closePrice
 
+    override fun setClosePrice(price: Float) {
+        this.closePrice = price
+    }
+
     override fun getVolume() = volume
 
+    override fun setVolume(volume: Long) {
+        this.volume = volume
+    }
+
     override fun getTime() = time
 
+    override fun setTime(time: Long) {
+        this.time = time
+    }
+
     override fun getAvgPrice() = avgPrice
+
+    override fun setAvgPrice(price: Float?) {
+        this.avgPrice = price
+    }
 }
\ No newline at end of file
diff --git a/lib/src/main/java/com/github/wangyiqian/stockchart/entities/KEntityOfLineStarter.kt b/lib/src/main/java/com/github/wangyiqian/stockchart/entities/KEntityOfLineStarter.kt
index 21570bf..45cddbc 100644
--- a/lib/src/main/java/com/github/wangyiqian/stockchart/entities/KEntityOfLineStarter.kt
+++ b/lib/src/main/java/com/github/wangyiqian/stockchart/entities/KEntityOfLineStarter.kt
@@ -19,19 +19,47 @@ package com.github.wangyiqian.stockchart.entities
  * @author wangyiqian E-mail: wangyiqian9891@gmail.com
  * @version 创建时间: 2021/2/22
  */
-class KEntityOfLineStarter(private val kEntity: IKEntity) : IKEntity {
+open class KEntityOfLineStarter(private val kEntity: IKEntity) : IKEntity {
 
     override fun getHighPrice() = kEntity.getHighPrice()
 
+    override fun setHighPrice(price: Float) {
+        kEntity.setHighPrice(price)
+    }
+
     override fun getLowPrice() = kEntity.getLowPrice()
 
+    override fun setLowPrice(price: Float) {
+        kEntity.setLowPrice(price)
+    }
+
     override fun getOpenPrice() = kEntity.getOpenPrice()
 
+    override fun setOpenPrice(price: Float) {
+        kEntity.setOpenPrice(price)
+    }
+
     override fun getClosePrice() = kEntity.getClosePrice()
 
+    override fun setClosePrice(price: Float) {
+        kEntity.setClosePrice(price)
+    }
+
     override fun getVolume() = kEntity.getVolume()
 
+    override fun setVolume(volume: Long) {
+        kEntity.setVolume(volume)
+    }
+
     override fun getTime() = kEntity.getTime()
 
+    override fun setTime(time: Long) {
+        kEntity.setTime(time)
+    }
+
     override fun getAvgPrice() = kEntity.getAvgPrice()
+
+    override fun setAvgPrice(price: Float?) {
+        kEntity.setAvgPrice(price)
+    }
 }
\ No newline at end of file
diff --git a/lib/src/main/java/com/github/wangyiqian/stockchart/listener/OnKEntitiesChangedListener.kt b/lib/src/main/java/com/github/wangyiqian/stockchart/listener/OnKEntitiesChangedListener.kt
index d38aa4e..bf5045d 100644
--- a/lib/src/main/java/com/github/wangyiqian/stockchart/listener/OnKEntitiesChangedListener.kt
+++ b/lib/src/main/java/com/github/wangyiqian/stockchart/listener/OnKEntitiesChangedListener.kt
@@ -19,5 +19,6 @@ package com.github.wangyiqian.stockchart.listener
  */
 interface OnKEntitiesChangedListener {
     fun onSetKEntities()
+    fun onModifyKEntities()
     fun onAppendKEntities()
 }
\ No newline at end of file