diff --git a/src/db/mod.rs b/src/db/mod.rs
index 605bf50..3165e30 100644
--- a/src/db/mod.rs
+++ b/src/db/mod.rs
@@ -2,6 +2,7 @@ pub mod config;
 #[cfg(feature = "db_sqlite")]
 pub mod sqlite;
 pub mod traits;
+#[cfg(feature = "server")]
 pub mod user;
 
 pub use config::check_db_config;
@@ -11,6 +12,7 @@ pub use config::PixivDownloaderSqliteConfig;
 #[cfg(feature = "db_sqlite")]
 pub use sqlite::{PixivDownloaderSqlite, SqliteError};
 pub use traits::PixivDownloaderDb;
+#[cfg(feature = "server")]
 pub use user::User;
 pub type PixivDownloaderDbError = anyhow::Error;
 
diff --git a/src/db/sqlite/db.rs b/src/db/sqlite/db.rs
index 3fbcc0d..130154c 100644
--- a/src/db/sqlite/db.rs
+++ b/src/db/sqlite/db.rs
@@ -1,6 +1,7 @@
+#[cfg(feature = "server")]
+use super::super::User;
 use super::super::{
-    PixivDownloaderDb, PixivDownloaderDbConfig, PixivDownloaderDbError,
-    PixivDownloaderSqliteConfig, User,
+    PixivDownloaderDb, PixivDownloaderDbConfig, PixivDownloaderDbError, PixivDownloaderSqliteConfig,
 };
 use super::SqliteError;
 use bytes::BytesMut;
@@ -171,6 +172,7 @@ impl PixivDownloaderSqlite {
         Ok(tables)
     }
 
+    #[cfg(feature = "server")]
     async fn _get_user(&self, id: u64) -> Result<Option<User>, SqliteError> {
         let con = self.db.lock().await;
         Ok(con
@@ -239,6 +241,7 @@ impl PixivDownloaderDb for PixivDownloaderSqlite {
         }
     }
 
+    #[cfg(feature = "server")]
     async fn get_user(&self, id: u64) -> Result<Option<User>, PixivDownloaderDbError> {
         Ok(self._get_user(id).await?)
     }
diff --git a/src/db/traits.rs b/src/db/traits.rs
index 379f4fd..598813c 100644
--- a/src/db/traits.rs
+++ b/src/db/traits.rs
@@ -1,5 +1,6 @@
 use super::PixivDownloaderDbConfig;
 use super::PixivDownloaderDbError;
+#[cfg(feature = "server")]
 use super::User;
 
 #[async_trait]
@@ -11,6 +12,7 @@ pub trait PixivDownloaderDb {
     ) -> Result<Self, PixivDownloaderDbError>
     where
         Self: Sized + Send + Sync;
+    #[cfg(feature = "server")]
     /// Get a user by ID
     /// * `id`: The user's ID
     async fn get_user(&self, id: u64) -> Result<Option<User>, PixivDownloaderDbError>;