diff --git a/framework/gateway/src/main/java/io/metersphere/gateway/controller/LoginController.java b/framework/gateway/src/main/java/io/metersphere/gateway/controller/LoginController.java
index 0067883250..4d1f784d5b 100644
--- a/framework/gateway/src/main/java/io/metersphere/gateway/controller/LoginController.java
+++ b/framework/gateway/src/main/java/io/metersphere/gateway/controller/LoginController.java
@@ -109,6 +109,13 @@ public class LoginController {
         return Mono.just(image);
     }
 
+    @GetMapping("display/file/css")
+    public Mono<ResponseEntity<byte[]>> cssFile() throws IOException {
+        ResponseEntity<byte[]> css = baseDisplayService.getCss();
+        return Mono.just(css);
+    }
+
+
     @GetMapping("display/info")
     public Mono<ResultHolder> uiInfo() {
         return Mono.just(ResultHolder.success(baseDisplayService.uiInfo("ui")));
diff --git a/framework/gateway/src/main/java/io/metersphere/gateway/service/BaseDisplayService.java b/framework/gateway/src/main/java/io/metersphere/gateway/service/BaseDisplayService.java
index e56d61a00b..bd9a49f47f 100644
--- a/framework/gateway/src/main/java/io/metersphere/gateway/service/BaseDisplayService.java
+++ b/framework/gateway/src/main/java/io/metersphere/gateway/service/BaseDisplayService.java
@@ -96,4 +96,21 @@ public class BaseDisplayService {
         dtoList.sort(Comparator.comparingInt(SystemParameter::getSort));
         return dtoList;
     }
+
+    public ResponseEntity<byte[]> getCss() {
+        byte[] bytes = new byte[0];
+        List<SystemParameter> paramList = getParamList("ui.css");
+        if (!CollectionUtils.isEmpty(paramList)) {
+            SystemParameter sp = paramList.get(0);
+            String paramValue = sp.getParamValue();
+            if (StringUtils.isNotBlank(paramValue)) {
+                bytes = loadFileAsBytes(paramValue);
+            }
+        }
+
+        return ResponseEntity.ok()
+                .contentType(MediaType.parseMediaType("text/css"))
+                .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=css")
+                .body(bytes);
+    }
 }
diff --git a/framework/sdk-parent/sdk/src/main/java/io/metersphere/controller/LoginController.java b/framework/sdk-parent/sdk/src/main/java/io/metersphere/controller/LoginController.java
index 3019330f15..a7a0a1e23f 100644
--- a/framework/sdk-parent/sdk/src/main/java/io/metersphere/controller/LoginController.java
+++ b/framework/sdk-parent/sdk/src/main/java/io/metersphere/controller/LoginController.java
@@ -112,6 +112,11 @@ public class LoginController {
         return baseDisplayService.getImage(imageName);
     }
 
+    @GetMapping("display/file/css")
+    public ResponseEntity<byte[]> cssFile() throws IOException {
+        return baseDisplayService.getCss();
+    }
+
     @GetMapping(value = "/services")
     public List<ServiceDTO> services() {
         return List.of(new ServiceDTO(serviceId, port));
diff --git a/framework/sdk-parent/sdk/src/main/java/io/metersphere/service/BaseDisplayService.java b/framework/sdk-parent/sdk/src/main/java/io/metersphere/service/BaseDisplayService.java
index 449fa47d6c..fb26b2fc3a 100644
--- a/framework/sdk-parent/sdk/src/main/java/io/metersphere/service/BaseDisplayService.java
+++ b/framework/sdk-parent/sdk/src/main/java/io/metersphere/service/BaseDisplayService.java
@@ -4,6 +4,7 @@ import io.metersphere.base.domain.SystemParameter;
 import io.metersphere.base.domain.SystemParameterExample;
 import io.metersphere.base.mapper.SystemParameterMapper;
 import io.metersphere.metadata.service.FileMetadataService;
+import jakarta.annotation.Resource;
 import org.apache.commons.collections4.CollectionUtils;
 import org.apache.commons.io.IOUtils;
 import org.apache.commons.lang3.StringUtils;
@@ -14,7 +15,6 @@ import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
-import jakarta.annotation.Resource;
 import java.io.IOException;
 import java.util.List;
 
@@ -77,4 +77,21 @@ public class BaseDisplayService {
                 .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\"" + imageName + "\"")
                 .body(bytes);
     }
+
+    public ResponseEntity<byte[]> getCss() {
+        byte[] bytes = new byte[0];
+        List<SystemParameter> paramList = getParamList("ui.css");
+        if (!CollectionUtils.isEmpty(paramList)) {
+            SystemParameter sp = paramList.get(0);
+            String paramValue = sp.getParamValue();
+            if (StringUtils.isNotBlank(paramValue)) {
+                bytes = loadFileAsBytes(paramValue);
+            }
+        }
+
+        return ResponseEntity.ok()
+                .contentType(MediaType.parseMediaType("text/css"))
+                .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=css")
+                .body(bytes);
+    }
 }