diff --git a/app/src/main/java/com/huanchengfly/tieba/post/components/NavSerializer.kt b/app/src/main/java/com/huanchengfly/tieba/post/components/NavSerializer.kt
new file mode 100644
index 00000000..3b6739df
--- /dev/null
+++ b/app/src/main/java/com/huanchengfly/tieba/post/components/NavSerializer.kt
@@ -0,0 +1,24 @@
+package com.huanchengfly.tieba.post.components
+
+import android.util.Log
+import com.huanchengfly.tieba.post.api.models.protos.ThreadInfo
+import com.huanchengfly.tieba.post.api.urlDecode
+import com.huanchengfly.tieba.post.api.urlEncode
+import com.ramcosta.composedestinations.navargs.DestinationsNavTypeSerializer
+import com.ramcosta.composedestinations.navargs.NavTypeSerializer
+import com.ramcosta.composedestinations.navargs.utils.base64ToByteArray
+import com.ramcosta.composedestinations.navargs.utils.toBase64Str
+
+@NavTypeSerializer
+class ThreadInfoSerializer : DestinationsNavTypeSerializer<ThreadInfo> {
+    override fun toRouteString(value: ThreadInfo): String {
+        val routeStr = ThreadInfo.ADAPTER.encode(value).toBase64Str().urlEncode()
+        Log.d("ThreadInfoSerializer", "toRouteString: $routeStr")
+        return routeStr
+    }
+
+    override fun fromRouteString(routeStr: String): ThreadInfo {
+        Log.d("ThreadInfoSerializer", "fromRouteString: $routeStr")
+        return ThreadInfo.ADAPTER.decode(routeStr.urlDecode().base64ToByteArray())
+    }
+}
\ No newline at end of file