diff --git a/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/io/ProtoBuf.kt b/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/io/ProtoBuf.kt
index 678540fb2..2a1c9e34c 100644
--- a/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/io/ProtoBuf.kt
+++ b/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/io/ProtoBuf.kt
@@ -1,7 +1,32 @@
 package net.mamoe.mirai.qqandroid.io
 
+import kotlinx.io.core.Input
+import kotlinx.io.core.readBytes
+import kotlinx.serialization.DeserializationStrategy
+import kotlinx.serialization.SerializationStrategy
+
 /**
  * 仅有标示作用
  */
-interface ProtoBuf {
+interface ProtoBuf
+
+/**
+ * dump
+ */
+fun <T : ProtoBuf> T.toByteArray(serializer: SerializationStrategy<T>): ByteArray {
+    return kotlinx.serialization.protobuf.ProtoBuf.dump(serializer, this)
+}
+
+/**
+ * load
+ */
+fun <T : ProtoBuf> ByteArray.loadAs(serializer: DeserializationStrategy<T>): T {
+    return kotlinx.serialization.protobuf.ProtoBuf.load(serializer, this)
+}
+
+/**
+ * load
+ */
+fun <T : ProtoBuf> Input.readRemainingAsProtoBuf(serializer: DeserializationStrategy<T>): T {
+    return kotlinx.serialization.protobuf.ProtoBuf.load(serializer, this.readBytes())
 }
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