diff --git a/src/main/java/com/teaching/backend/controller/Know/KnowController.java b/src/main/java/com/teaching/backend/controller/Know/KnowController.java
index 7fcce7d..2ec254d 100644
--- a/src/main/java/com/teaching/backend/controller/Know/KnowController.java
+++ b/src/main/java/com/teaching/backend/controller/Know/KnowController.java
@@ -51,7 +51,7 @@ public class KnowController {
         return knowService.knowLearnPath(corseId);
     }
     //生成知识点学习路径 默认从第一个知识点到第最后个知识点
-    @ApiOperation(value = "生成知识点学习路径")
+    @ApiOperation(value = "生成知识点学习路径-图信息")
     @GetMapping("/knowLearnPathGraph")
     BaseResponse<BaseKnowReturn> knowLearnPathGraph(@RequestParam String corseId){
         return knowService.knowLearnPathGraph(corseId);
@@ -74,9 +74,12 @@ public class KnowController {
 
     //返回课程下指定关系的知识图谱
     @ApiOperation(value = "返回课程下指定关系的知识图谱")
-    @GetMapping("/getRelsNodesByCourseId")
-    BaseResponse<BaseKnowReturn> getRelsNodesByCourseId(@RequestParam String courseId,@RequestParam Integer level,@RequestParam List<String>types){
-        return knowService.getRelsNodesByCourseId(courseId,  level,types);
+    @PostMapping("/getRelsNodesByCourseId")
+    BaseResponse<BaseKnowReturn> getRelsNodesByCourseId(@RequestBody RelsNodesVO relsNodesVO){
+        String courseId = relsNodesVO.getCourseId();
+        Integer level = relsNodesVO.getLevel();
+        List<String> types = relsNodesVO.getTypes();
+        return knowService.getRelsNodesByCourseId(courseId, level,types);
     }
 
     //返回知识点的前后知识点
diff --git a/src/main/java/com/teaching/backend/controller/Know/RelsNodesVO.java b/src/main/java/com/teaching/backend/controller/Know/RelsNodesVO.java
new file mode 100644
index 0000000..3609edd
--- /dev/null
+++ b/src/main/java/com/teaching/backend/controller/Know/RelsNodesVO.java
@@ -0,0 +1,24 @@
+package com.teaching.backend.controller.Know;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import lombok.NonNull;
+import org.springframework.web.bind.annotation.RequestParam;
+
+import java.util.List;
+
+/**
+ * @Author:youhang
+ * @Date:2024-09-02-9:47
+ * @Description:
+ */
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class RelsNodesVO {
+    @NonNull
+    private String courseId;
+    private Integer level;
+    private List<String> types;
+}
diff --git a/src/main/java/com/teaching/backend/service/impl/know/knowServiceImpl.java b/src/main/java/com/teaching/backend/service/impl/know/knowServiceImpl.java
index b36f89d..2266643 100644
--- a/src/main/java/com/teaching/backend/service/impl/know/knowServiceImpl.java
+++ b/src/main/java/com/teaching/backend/service/impl/know/knowServiceImpl.java
@@ -833,16 +833,33 @@ public class knowServiceImpl implements KnowService {
 
     @Override
     public BaseResponse<BaseKnowReturn> getRelsNodesByCourseId(String courseId,  Integer level,List<String> types) {
+        List<String> typesTemp = new ArrayList<>();
+        String str;
+        if(types == null || types.size() <= 0){
+            typesTemp.add("contain");
+            typesTemp.add("orer");
+            typesTemp.add("dependent");
+             str = "match(n:Know)-[r:";
+            for (int i = 0; i < typesTemp.size(); i++) {
+                if (i == typesTemp.size() - 1) {
+                    str = str + typesTemp.get(i) + "*";
+                } else {
+                    str = str + typesTemp.get(i) + "|";
+                }
 
-        String str = "match(n:Know)-[r:";
-        for (int i = 0; i < types.size(); i++) {
-            if (i == types.size() - 1) {
-                str = str + types.get(i) + "*";
-            } else {
-                str = str + types.get(i) + "|";
             }
+        }else{
+             str = "match(n:Know)-[r:";
+            for (int i = 0; i < types.size(); i++) {
+                if (i == types.size() - 1) {
+                    str = str + types.get(i) + "*";
+                } else {
+                    str = str + types.get(i) + "|";
+                }
 
+            }
         }
+
         if(level == null || level <= 0){
             str = str +"]->(p:Know) where n.courseId = '" + courseId + "' return n as `n`,r as `r`,p as `p`,length(r) as `d`";
         }else{