diff --git a/crates/erp-auth/src/middleware/jwt_auth.rs b/crates/erp-auth/src/middleware/jwt_auth.rs
index 4fc1cdc..00a7c94 100644
--- a/crates/erp-auth/src/middleware/jwt_auth.rs
+++ b/crates/erp-auth/src/middleware/jwt_auth.rs
@@ -5,7 +5,7 @@ use axum::response::Response;
 use erp_core::error::AppError;
 use erp_core::request_info::REQUEST_INFO;
 use erp_core::request_info::RequestInfo;
-use erp_core::types::TenantContext;
+use erp_core::types::{DataScope, TenantContext};
 
 use crate::service::token_service::TokenService;
 
@@ -63,6 +63,12 @@ pub async fn jwt_auth_middleware_fn(
         None => vec![],
     };
 
+    // 查询每个权限的数据范围
+    let permission_data_scopes = match &db {
+        Some(conn) => fetch_permission_data_scopes(claims.sub, claims.tid, conn).await,
+        None => std::collections::HashMap::new(),
+    };
+
     // 提取请求来源信息（IP + User-Agent），用于审计日志
     let request_info = RequestInfo::from_headers(req.headers());
 
@@ -72,6 +78,7 @@ pub async fn jwt_auth_middleware_fn(
         roles: claims.roles,
         permissions: claims.permissions,
         department_ids,
+        permission_data_scopes,
     };
 
     // Reconstruct the request with the TenantContext injected into extensions.
@@ -105,3 +112,58 @@ async fn fetch_user_department_ids(
             vec![]
         })
 }
+
+/// 查询用户每个权限的数据范围（从 role_permissions 表）
+async fn fetch_permission_data_scopes(
+    user_id: uuid::Uuid,
+    tenant_id: uuid::Uuid,
+    db: &sea_orm::DatabaseConnection,
+) -> std::collections::HashMap<String, DataScope> {
+    use sea_orm::ConnectionTrait;
+
+    let sql = r#"
+        SELECT p.code, MIN(
+            CASE rp.data_scope
+                WHEN 'all' THEN 0
+                WHEN 'department_tree' THEN 1
+                WHEN 'department' THEN 2
+                WHEN 'self' THEN 3
+                ELSE 0
+            END
+        ) AS scope_rank,
+        MIN(rp.data_scope) AS data_scope
+        FROM user_roles ur
+        JOIN role_permissions rp ON ur.role_id = rp.role_id AND ur.tenant_id = rp.tenant_id
+        JOIN permissions p ON rp.permission_id = p.id
+        WHERE ur.user_id = $1
+          AND ur.tenant_id = $2
+          AND ur.deleted_at IS NULL
+          AND rp.deleted_at IS NULL
+        GROUP BY p.code
+    "#;
+
+    let stmt = sea_orm::Statement::from_sql_and_values(
+        sea_orm::DatabaseBackend::Postgres,
+        sql,
+        [user_id.into(), tenant_id.into()],
+    );
+
+    match db.query_all(stmt).await {
+        Ok(rows) => {
+            let mut scopes = std::collections::HashMap::new();
+            for row in rows {
+                if let (Ok(code), Ok(scope)) = (
+                    row.try_get_by_index::<String>(0),
+                    row.try_get_by_index::<String>(2),
+                ) {
+                    scopes.insert(code, DataScope::from_str(&scope));
+                }
+            }
+            scopes
+        }
+        Err(e) => {
+            tracing::warn!(error = %e, "查询权限数据范围失败，默认全部 All");
+            std::collections::HashMap::new()
+        }
+    }
+}
diff --git a/crates/erp-core/src/rbac.rs b/crates/erp-core/src/rbac.rs
index 4fce2f0..e3b588e 100644
--- a/crates/erp-core/src/rbac.rs
+++ b/crates/erp-core/src/rbac.rs
@@ -1,5 +1,5 @@
 use crate::error::AppError;
-use crate::types::TenantContext;
+use crate::types::{DataScope, TenantContext};
 
 /// Check whether the `TenantContext` includes the specified permission code.
 ///
@@ -38,6 +38,16 @@ pub fn require_role(ctx: &TenantContext, role: &str) -> Result<(), AppError> {
     }
 }
 
+/// 获取指定权限的数据范围。默认 All（向后兼容）。
+///
+/// Service 层根据返回值追加对应的查询过滤条件。
+pub fn get_data_scope(ctx: &TenantContext, permission: &str) -> DataScope {
+    ctx.permission_data_scopes
+        .get(permission)
+        .cloned()
+        .unwrap_or(DataScope::All)
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -50,6 +60,7 @@ mod tests {
             roles: roles.into_iter().map(String::from).collect(),
             permissions: permissions.into_iter().map(String::from).collect(),
             department_ids: vec![],
+            permission_data_scopes: std::collections::HashMap::new(),
         }
     }
 
diff --git a/crates/erp-core/src/types.rs b/crates/erp-core/src/types.rs
index 338962e..7145fc0 100644
--- a/crates/erp-core/src/types.rs
+++ b/crates/erp-core/src/types.rs
@@ -1,5 +1,6 @@
 use chrono::{DateTime, Utc};
 use serde::{Deserialize, Serialize};
+use std::collections::HashMap;
 use uuid::Uuid;
 
 /// 所有数据库实体的公共字段
@@ -114,6 +115,7 @@ mod tests {
             roles: vec!["admin".to_string()],
             permissions: vec!["user.read".to_string()],
             department_ids: vec![],
+            permission_data_scopes: HashMap::new(),
         };
         assert_eq!(ctx.roles.len(), 1);
         assert_eq!(ctx.permissions.len(), 1);
@@ -148,6 +150,30 @@ impl<T: Serialize> ApiResponse<T> {
     }
 }
 
+/// 行级数据权限范围
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub enum DataScope {
+    /// 查看所有数据
+    All,
+    /// 仅查看自己创建的数据
+    SelfOnly,
+    /// 仅查看本部门数据
+    Department,
+    /// 查看本部门及下属部门数据
+    DepartmentTree,
+}
+
+impl DataScope {
+    pub fn from_str(s: &str) -> Self {
+        match s {
+            "self" => Self::SelfOnly,
+            "department" => Self::Department,
+            "department_tree" => Self::DepartmentTree,
+            _ => Self::All,
+        }
+    }
+}
+
 /// 租户上下文（中间件注入）
 #[derive(Debug, Clone)]
 pub struct TenantContext {
@@ -157,4 +183,6 @@ pub struct TenantContext {
     pub permissions: Vec<String>,
     /// 用户所属部门 ID 列表（行级数据权限使用）
     pub department_ids: Vec<Uuid>,
+    /// 每个权限码对应的数据范围（从 role_permissions.data_scope 加载）
+    pub permission_data_scopes: HashMap<String, DataScope>,
 }