diff --git a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/At.kt b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/At.kt
index 667bc16b0..457f91cbd 100644
--- a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/At.kt
+++ b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/At.kt
@@ -14,6 +14,10 @@ inline class At(val target: Long) : Message {
     override fun toString(): String = "[@$target]" // TODO: 2019/11/25 使用群名称进行 at. 因为手机端只会显示这个文字
 
     companion object Key : Message.Key<At>
+
+    override fun eq(other: Message): Boolean {
+        return other is At && other.target == this.target
+    }
 }
 
 /**
diff --git a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/Face.kt b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/Face.kt
index 507ea34ee..8176aa510 100644
--- a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/Face.kt
+++ b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/Face.kt
@@ -9,6 +9,10 @@ inline class Face(val id: FaceId) : Message {
     override fun toString(): String = "[face${id.value}]"
 
     companion object Key : Message.Key<Face>
+
+    override fun eq(other: Message): Boolean {
+        return other is Face && other.id == this.id
+    }
 }
 
 /**
diff --git a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/Image.kt b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/Image.kt
index 453ac36b3..95dcdbdbb 100644
--- a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/Image.kt
+++ b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/Image.kt
@@ -19,6 +19,10 @@ inline class Image(inline val id: ImageId) : Message {
     override fun toString(): String = "[${id.value}]"
 
     companion object Key : Message.Key<Image>
+
+    override fun eq(other: Message): Boolean {
+        return other is Image && other.id == this.id
+    }
 }
 
 inline val Image.idValue: String get() = id.value
diff --git a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/Message.kt b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/Message.kt
index 767ef4db5..42a049cf5 100644
--- a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/Message.kt
+++ b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/Message.kt
@@ -97,6 +97,8 @@ interface Message {
     operator fun plus(another: Float): MessageChain = this.followedBy(another.toString().toMessage())
 
     operator fun plus(another: Number): MessageChain = this.followedBy(another.toString().toMessage())
+
+
 }
 
 /**
diff --git a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/MessageChain.kt b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/MessageChain.kt
index 31f913bdc..2483420bc 100644
--- a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/MessageChain.kt
+++ b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/MessageChain.kt
@@ -41,6 +41,11 @@ interface MessageChain : Message, MutableList<Message> {
      */
     operator fun <M : Message> get(key: Message.Key<M>): M = first(key)
 
+    override fun eq(other: Message): Boolean {
+        if(other is MessageChain && other.size != this.size)
+            return false
+        return this.toString() == other.toString()
+    }
 }
 
 /**
diff --git a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/PlainText.kt b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/PlainText.kt
index 72ae01ac0..c0ce69020 100644
--- a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/PlainText.kt
+++ b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/PlainText.kt
@@ -6,6 +6,13 @@ inline class PlainText(val stringValue: String) : Message {
     override fun toString(): String = stringValue
 
     companion object Key : Message.Key<PlainText>
+
+    override fun eq(other: Message): Boolean {
+        if(other is MessageChain){
+            return other eq this.toString()
+        }
+        return other is PlainText && other.stringValue == this.stringValue
+    }
 }
 
 /**
diff --git a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/XML.kt b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/XML.kt
index 78b0ca2a1..65b6bece2 100644
--- a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/XML.kt
+++ b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/XML.kt
@@ -11,6 +11,10 @@ inline class XMLMessage(val stringValue: String) : Message,
     SingleOnly {
     override fun followedBy(tail: Message): Nothing = error("XMLMessage Message cannot be followed")
     override fun toString(): String = stringValue
+
+    override fun eq(other: Message): Boolean {
+        return other is XMLMessage && other.stringValue == this.stringValue
+    }
 }
 
 /**