diff --git a/src/main/java/com/jsl/oa/dao/ProjectDAO.java b/src/main/java/com/jsl/oa/dao/ProjectDAO.java
index 31448eb..c541a3d 100644
--- a/src/main/java/com/jsl/oa/dao/ProjectDAO.java
+++ b/src/main/java/com/jsl/oa/dao/ProjectDAO.java
@@ -185,9 +185,6 @@ public class ProjectDAO {
         return projectMapper.getAllProject();
     }
 
-    public ProjectModuleDO getProjectWorkerById(Long id) {
-        return projectMapper.getProjectWorkById(id);
-    }
 
     public List<ProjectDO> getProjectByPrincipalUser(Long uid) {
         log.info("\t> 执行 DAO 层 ProjectDAO.getProjectFromUser 方法");
diff --git a/src/main/java/com/jsl/oa/services/impl/MessageServiceImpl.java b/src/main/java/com/jsl/oa/services/impl/MessageServiceImpl.java
index ef6f2dc..6acb433 100644
--- a/src/main/java/com/jsl/oa/services/impl/MessageServiceImpl.java
+++ b/src/main/java/com/jsl/oa/services/impl/MessageServiceImpl.java
@@ -188,7 +188,10 @@ public class MessageServiceImpl implements MessageService {
         // 获取项目名,负责人名
         String projectName = projectMapper.tgetProjectById(pId).getName();
         String senderName = userDAO.getUserById(Processing.getAuthHeaderToUserId(request)).getUsername();
-        String systemName = projectMapper.getWorkById(systemId).getName();
+        String systemName = null;
+        if (systemId != null && projectMapper.getWorkById(systemId) != null) {
+            systemName = projectMapper.getWorkById(systemId).getName();
+        }
         // 添加消息
         // 1:上传文档 2:修改状态 3:修改负责人
         List<Long> uidList = projectMapper.getMemberByProjectId(pId);
@@ -238,7 +241,7 @@ public class MessageServiceImpl implements MessageService {
         String senderName = userDAO.getUserById(Processing.getAuthHeaderToUserId(request)).getUsername();
         String systemName = projectMapper.getWorkById(systmeId).getName();
         String moddleName = null;
-        if (moddleId != null) {
+        if (moddleId != null && projectMapper.getModuleById(moddleId) != null) {
          moddleName = projectMapper.getModuleById(moddleId).getName();
         }
         // 添加消息
diff --git a/src/main/java/com/jsl/oa/services/impl/ProjectServiceImpl.java b/src/main/java/com/jsl/oa/services/impl/ProjectServiceImpl.java
index 3b4a3a3..acdc889 100644
--- a/src/main/java/com/jsl/oa/services/impl/ProjectServiceImpl.java
+++ b/src/main/java/com/jsl/oa/services/impl/ProjectServiceImpl.java
@@ -339,6 +339,10 @@ public class ProjectServiceImpl implements ProjectService {
                 projectMapper.getPirIdbyId(projectMapper.getModuleById(id.intValue()).getProjectChildId()))) {
             return ResultUtil.error(ErrorCode.NOT_PERMISSION);
         } else {
+            ProjectModuleDO projectModuleDO = projectMapper.getModuleById(id.intValue());
+            if (projectModuleDO == null) {
+                return ResultUtil.error(ErrorCode.MODULE_NOT_EXIST);
+            }
             HashMap<String, Object> descriptionMap = new HashMap<>();
             descriptionMap.put("description", projectModuleEditVO.getDescription());
             projectModuleEditVO.setDescription(gson.toJson(descriptionMap));
@@ -346,7 +350,6 @@ public class ProjectServiceImpl implements ProjectService {
             projectMapper.projectModuleEdit(projectModuleEditVO);
         }
 
-
         return ResultUtil.success("修改成功");
     }
 
@@ -356,8 +359,12 @@ public class ProjectServiceImpl implements ProjectService {
         if (!Objects.equals(Processing.getAuthHeaderToUserId(request), projectMapper.getPirIdbyId(id))) {
             return ResultUtil.error(ErrorCode.NOT_PERMISSION);
         } else {
+            ProjectChildDO projectChildDO = projectMapper.getProjectChildById(id.intValue());
+            if (projectChildDO == null) {
+                return ResultUtil.error(ErrorCode.PROJECT_CHILD_NOT_EXIST);
+            }
             JsonObject jsonObject = gson
-                    .fromJson(projectMapper.getProjectChildById(id.intValue()).getDescription(), JsonObject.class);
+                    .fromJson(projectChildDO.getDescription(), JsonObject.class);
             //改动简介发送消息
             if (!Objects.equals(projectChildAddVO.getDescription(), "")
                     && !projectChildAddVO.getDescription()
@@ -365,11 +372,20 @@ public class ProjectServiceImpl implements ProjectService {
                 messageService.messageAdd(projectMapper.getProjectIdBySysId(id)
                         .intValue(), id.intValue(), null, 2, request);
             } // 改动周期或工作量发送消息
-            if (projectChildAddVO.getCycle() != null || projectChildAddVO.getWorkLoad() != null) {
+            if ((projectChildAddVO.getCycle() != null
+                    && projectChildDO.getCycle().equals(projectChildAddVO.getCycle()))
+                    || (projectChildAddVO.getWorkLoad() != null
+                    && projectChildDO.getWorkLoad().equals(projectChildAddVO.getWorkLoad()))
+            ) {
                 messageService.messageAdd(projectMapper.getProjectIdBySysId(id)
                         .intValue(), id.intValue(), null, 3, request);
+            } //改动负责人发送消息
+            if (projectChildAddVO.getPrincipalId() != null
+                    && !Objects.equals(projectChildAddVO.getPrincipalId(),
+                    projectChildDO.getPrincipalId())) {
+                messageService.messageAdd(projectMapper.getProjectIdBySysId(id)
+                        .intValue(),  3, id.intValue(),  request);
             }
-
             HashMap<String, Object> descriptionMap = new HashMap<>();
             descriptionMap.put("description", projectChildAddVO.getDescription());
             projectChildAddVO.setDescription(gson.toJson(descriptionMap));
@@ -378,7 +394,6 @@ public class ProjectServiceImpl implements ProjectService {
             projectMapper.projectChildEditAll(projectChildAddVO);
         }
 
-
         return ResultUtil.success("修改成功");
     }
 
@@ -440,6 +455,11 @@ public class ProjectServiceImpl implements ProjectService {
         //判断项目是否存在
         if (projectDAO.isExistProject(projectId)) {
             //更新数据
+            ProjectDO projectDO = projectDAO.getProjectById(projectId);
+            //改变项目状态发送消息
+            if (projectEdit.getStatus() != null && !projectDO.getStatus().equals(projectEdit.getStatus())) {
+                messageService.messageAdd(projectId.intValue(), 2, null, request);
+            }
             HashMap<String, Object> descriptionMap = new HashMap<>();
             descriptionMap.put("description", projectEdit.getDescription());
             projectEdit.setDescription(gson.toJson(descriptionMap));