diff --git a/backend/mci-server/src/main/java/com/sino/mci/admin/entity/PlatformRole.java b/backend/mci-server/src/main/java/com/sino/mci/admin/entity/PlatformRole.java
new file mode 100644
index 0000000..0d93c80
--- /dev/null
+++ b/backend/mci-server/src/main/java/com/sino/mci/admin/entity/PlatformRole.java
@@ -0,0 +1,17 @@
+package com.sino.mci.admin.entity;
+
+import com.baomidou.mybatisplus.annotation.TableName;
+import com.sino.mci.shared.entity.BaseEntity;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+
+@Data
+@EqualsAndHashCode(callSuper = true)
+@TableName("mci_platform_role")
+public class PlatformRole extends BaseEntity {
+
+    private String roleCode;
+    private String roleName;
+    private String permissions;
+    private Integer status;
+}
diff --git a/backend/mci-server/src/main/java/com/sino/mci/admin/entity/PlatformUser.java b/backend/mci-server/src/main/java/com/sino/mci/admin/entity/PlatformUser.java
new file mode 100644
index 0000000..02358e7
--- /dev/null
+++ b/backend/mci-server/src/main/java/com/sino/mci/admin/entity/PlatformUser.java
@@ -0,0 +1,20 @@
+package com.sino.mci.admin.entity;
+
+import com.baomidou.mybatisplus.annotation.TableName;
+import com.sino.mci.shared.entity.BaseEntity;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+
+@Data
+@EqualsAndHashCode(callSuper = true)
+@TableName("mci_user")
+public class PlatformUser extends BaseEntity {
+
+    private String tenantCode;
+    private String username;
+    private String password;
+    private String realName;
+    private String phone;
+    private String email;
+    private Integer status;
+}
diff --git a/backend/mci-server/src/main/java/com/sino/mci/admin/entity/Tenant.java b/backend/mci-server/src/main/java/com/sino/mci/admin/entity/Tenant.java
new file mode 100644
index 0000000..c92f7d0
--- /dev/null
+++ b/backend/mci-server/src/main/java/com/sino/mci/admin/entity/Tenant.java
@@ -0,0 +1,18 @@
+package com.sino.mci.admin.entity;
+
+import com.baomidou.mybatisplus.annotation.TableName;
+import com.sino.mci.shared.entity.BaseEntity;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+
+@Data
+@EqualsAndHashCode(callSuper = true)
+@TableName("mci_tenant")
+public class Tenant extends BaseEntity {
+
+    private String tenantCode;
+    private String tenantName;
+    private String authConfig;
+    private String inboundWebhookUrl;
+    private Integer status;
+}
diff --git a/backend/mci-server/src/main/java/com/sino/mci/admin/entity/UserRole.java b/backend/mci-server/src/main/java/com/sino/mci/admin/entity/UserRole.java
new file mode 100644
index 0000000..4d9682c
--- /dev/null
+++ b/backend/mci-server/src/main/java/com/sino/mci/admin/entity/UserRole.java
@@ -0,0 +1,16 @@
+package com.sino.mci.admin.entity;
+
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.Data;
+
+import java.time.LocalDateTime;
+
+@Data
+@TableName("mci_user_role")
+public class UserRole {
+
+    private Long id;
+    private Long userId;
+    private Long roleId;
+    private LocalDateTime createTime;
+}
diff --git a/backend/mci-server/src/main/java/com/sino/mci/admin/repository/PlatformRoleMapper.java b/backend/mci-server/src/main/java/com/sino/mci/admin/repository/PlatformRoleMapper.java
new file mode 100644
index 0000000..fcfd78e
--- /dev/null
+++ b/backend/mci-server/src/main/java/com/sino/mci/admin/repository/PlatformRoleMapper.java
@@ -0,0 +1,9 @@
+package com.sino.mci.admin.repository;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.sino.mci.admin.entity.PlatformRole;
+import org.apache.ibatis.annotations.Mapper;
+
+@Mapper
+public interface PlatformRoleMapper extends BaseMapper<PlatformRole> {
+}
diff --git a/backend/mci-server/src/main/java/com/sino/mci/admin/repository/PlatformUserMapper.java b/backend/mci-server/src/main/java/com/sino/mci/admin/repository/PlatformUserMapper.java
new file mode 100644
index 0000000..dea7235
--- /dev/null
+++ b/backend/mci-server/src/main/java/com/sino/mci/admin/repository/PlatformUserMapper.java
@@ -0,0 +1,9 @@
+package com.sino.mci.admin.repository;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.sino.mci.admin.entity.PlatformUser;
+import org.apache.ibatis.annotations.Mapper;
+
+@Mapper
+public interface PlatformUserMapper extends BaseMapper<PlatformUser> {
+}
diff --git a/backend/mci-server/src/main/java/com/sino/mci/admin/repository/TenantMapper.java b/backend/mci-server/src/main/java/com/sino/mci/admin/repository/TenantMapper.java
new file mode 100644
index 0000000..2f62583
--- /dev/null
+++ b/backend/mci-server/src/main/java/com/sino/mci/admin/repository/TenantMapper.java
@@ -0,0 +1,9 @@
+package com.sino.mci.admin.repository;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.sino.mci.admin.entity.Tenant;
+import org.apache.ibatis.annotations.Mapper;
+
+@Mapper
+public interface TenantMapper extends BaseMapper<Tenant> {
+}
diff --git a/backend/mci-server/src/main/java/com/sino/mci/admin/repository/UserRoleMapper.java b/backend/mci-server/src/main/java/com/sino/mci/admin/repository/UserRoleMapper.java
new file mode 100644
index 0000000..1a780a8
--- /dev/null
+++ b/backend/mci-server/src/main/java/com/sino/mci/admin/repository/UserRoleMapper.java
@@ -0,0 +1,9 @@
+package com.sino.mci.admin.repository;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.sino.mci.admin.entity.UserRole;
+import org.apache.ibatis.annotations.Mapper;
+
+@Mapper
+public interface UserRoleMapper extends BaseMapper<UserRole> {
+}
diff --git a/backend/mci-server/src/main/java/com/sino/mci/config/MybatisPlusConfig.java b/backend/mci-server/src/main/java/com/sino/mci/config/MybatisPlusConfig.java
new file mode 100644
index 0000000..a8ee337
--- /dev/null
+++ b/backend/mci-server/src/main/java/com/sino/mci/config/MybatisPlusConfig.java
@@ -0,0 +1,9 @@
+package com.sino.mci.config;
+
+import org.mybatis.spring.annotation.MapperScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@MapperScan("com.sino.mci.admin.repository")
+public class MybatisPlusConfig {
+}