diff --git a/src/main/java/com/teaching/backend/service/impl/courses/CoursesServiceImpl.java b/src/main/java/com/teaching/backend/service/impl/courses/CoursesServiceImpl.java
index ba71258..7c9a09e 100644
--- a/src/main/java/com/teaching/backend/service/impl/courses/CoursesServiceImpl.java
+++ b/src/main/java/com/teaching/backend/service/impl/courses/CoursesServiceImpl.java
@@ -720,8 +720,8 @@ public class CoursesServiceImpl extends ServiceImpl<CoursesMapper, Courses> impl
                         userReadMessageTimeVO.setReceiverName(student.getName());
                         userReadMessageTimeVOS.add(userReadMessageTimeVO);
                     } else {
-                        log.error("学生不存在: {}", sc.getStudent());
-                        throw new BusinessException(ErrorCode.PARAMS_USER_NOTEXISTS);
+                        log.warn("学生不存在: {}", sc.getStudent());
+                        continue;
                     }
                 }
             }
@@ -738,8 +738,8 @@ public class CoursesServiceImpl extends ServiceImpl<CoursesMapper, Courses> impl
                     userReadMessageTimeVO.setReceiverName(umsTeacher.getName());
                     userReadMessageTimeVOS.add(userReadMessageTimeVO);
                 } else {
-                    log.error("教师不存在: {}", teacherId);
-                    throw new BusinessException(ErrorCode.PARAMS_USER_NOTEXISTS);
+                    log.warn("教师不存在: {}", teacherId);
+                    continue;
                 }
             }
 
@@ -819,8 +819,8 @@ public class CoursesServiceImpl extends ServiceImpl<CoursesMapper, Courses> impl
                     userReadMessageTimeVO.setReceiverName(umsTeacher.getName());
                     userReadMessageTimeVOS.add(userReadMessageTimeVO);
                 } else {
-                    log.error("教师不存在: {}", teacherId);
-                    throw new BusinessException(ErrorCode.PARAMS_USER_NOTEXISTS);
+                    log.warn("教师不存在: {}", teacherId);
+                    continue;
                 }
             }
 
@@ -834,8 +834,8 @@ public class CoursesServiceImpl extends ServiceImpl<CoursesMapper, Courses> impl
                         userReadMessageTimeVO.setReceiverName(student.getName());
                         userReadMessageTimeVOS.add(userReadMessageTimeVO);
                     } else {
-                        log.error("学生不存在: {}", sc.getStudent());
-                        throw new BusinessException(ErrorCode.PARAMS_USER_NOTEXISTS);
+                        log.warn("学生不存在: {}", sc.getStudent());
+                        continue;
                     }
                 }
             }