diff --git a/src/db/mod.rs b/src/db/mod.rs
index 6a84de3..21ad569 100644
--- a/src/db/mod.rs
+++ b/src/db/mod.rs
@@ -4,7 +4,7 @@ pub mod member;
 
 const DEFAULT_PAGE_SIZE: u32 = 30;
 
-#[derive(Serialize)]
+#[derive(Serialize, Debug)]
 pub struct Paginate<T: Serialize> {
     pub total: u32,
     pub total_page: u32,
diff --git a/src/lib.rs b/src/lib.rs
index 913ee71..9ef3a09 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -5,4 +5,6 @@ pub mod handler;
 pub mod model;
 pub mod view;
 pub mod form;
+pub mod util;
+
 pub type Result<T> = std::result::Result<T, crate::err::Error>;
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
index 6ae74fe..6a871cf 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,5 +1,3 @@
-#![allow(unused, dead_code)]
-
 use std::sync::Arc;
 
 use axum::Router;
diff --git a/src/model/member.rs b/src/model/member.rs
index 7b6e9f6..6720bee 100644
--- a/src/model/member.rs
+++ b/src/model/member.rs
@@ -1,3 +1,4 @@
+use crate::util::default_datetime_format;
 use std::fmt::{Display, Formatter};
 
 use serde::{Deserialize, Serialize};
@@ -34,6 +35,7 @@ impl Display for MemberTypes {
 pub struct Member {
     pub id: u32,
     pub name: String,
+    #[serde(with = "default_datetime_format")]
     pub dateline: chrono::DateTime<chrono::Local>,
     pub balance: u32,
     pub types: MemberTypes,
diff --git a/src/util/mod.rs b/src/util/mod.rs
new file mode 100644
index 0000000..d9dd568
--- /dev/null
+++ b/src/util/mod.rs
@@ -0,0 +1,29 @@
+
+
+pub mod default_datetime_format {
+    use chrono::{DateTime, Local, NaiveDateTime};
+    use serde::{self, Deserialize, Serializer, Deserializer};
+
+    const FORMAT: &'static str = "%Y-%m-%d %H:%M:%S";
+
+    pub fn serialize<S>(
+        date: &DateTime<Local>,
+        serializer: S,
+    ) -> Result<S::Ok, S::Error>
+        where
+            S: Serializer,
+    {
+        let s = format!("{}", date.format(FORMAT));
+        serializer.serialize_str(&s)
+    }
+    pub fn deserialize<'de, D>(
+        deserializer: D,
+    ) -> Result<DateTime<Local>, D::Error>
+        where
+            D: Deserializer<'de>,
+    {
+        let datetime_str = String::deserialize(deserializer)?;
+        let dt  = NaiveDateTime::parse_from_str(&datetime_str, FORMAT).map_err(serde::de::Error::custom)?;
+        Ok(dt.and_local_timezone(Local).unwrap())
+    }
+}
\ No newline at end of file