diff --git a/internal/controllers/env_controller.go b/internal/controllers/env_controller.go
index 7c192f5..a804c1a 100644
--- a/internal/controllers/env_controller.go
+++ b/internal/controllers/env_controller.go
@@ -77,6 +77,10 @@ func (ec *EnvController) CreateEnvVar(c *gin.Context) {
 		relation.DataRelation.SaveTags(envVar.ID, constant.RelationTypeEnvTag, req.Tags)
 		envVar.Tags = req.Tags
 	}
+	
+	// Broadcast tasks to all agents because global envs changed
+	services.GetAgentWSManager().BroadcastTasksToAll()
+	
 	utils.Success(c, vo.ToEnvVO(envVar))
 }
 
@@ -210,6 +214,9 @@ func (ec *EnvController) UpdateEnvVar(c *gin.Context) {
 	relation.DataRelation.SaveTags(envVar.ID, constant.RelationTypeEnvTag, req.Tags)
 	envVar.Tags = req.Tags
 
+	// Broadcast tasks to all agents because global envs changed
+	services.GetAgentWSManager().BroadcastTasksToAll()
+
 	utils.Success(c, vo.ToEnvVO(envVar))
 }
 
@@ -250,6 +257,9 @@ func (ec *EnvController) DeleteEnvVar(c *gin.Context) {
 		return
 	}
 
+	// Broadcast tasks to all agents because global envs changed
+	services.GetAgentWSManager().BroadcastTasksToAll()
+
 	utils.SuccessMsg(c, "删除成功")
 }
 
diff --git a/internal/services/agent_ws_service.go b/internal/services/agent_ws_service.go
index 4a58db1..eb3e744 100644
--- a/internal/services/agent_ws_service.go
+++ b/internal/services/agent_ws_service.go
@@ -230,6 +230,20 @@ func (m *AgentWSManager) BroadcastTasks(agentID string) {
 	})
 }
 
+// BroadcastTasksToAll 广播任务更新给所有在线 Agent
+func (m *AgentWSManager) BroadcastTasksToAll() {
+	m.mu.RLock()
+	var agentIDs []string
+	for agentID := range m.connections {
+		agentIDs = append(agentIDs, agentID)
+	}
+	m.mu.RUnlock()
+
+	for _, agentID := range agentIDs {
+		m.BroadcastTasks(agentID)
+	}
+}
+
 // RegisterRemoteWaiter 注册远程任务结果等待者
 func (m *AgentWSManager) RegisterRemoteWaiter(logID string) chan *models.AgentTaskResult {
 	m.mu.Lock()
diff --git a/internal/services/env_service.go b/internal/services/env_service.go
index 0991bac..637beac 100644
--- a/internal/services/env_service.go
+++ b/internal/services/env_service.go
@@ -140,7 +140,7 @@ func (es *EnvService) UpdateEnvVar(id string, name, value, remark, envType strin
 func (es *EnvService) GetAssociatedTasks(id string) []models.Task {
 	var associatedTasks []models.Task
 	var taskIDs []string
-	database.DB.Model(&models.DataRelation{}).Where("type = ? AND relate_id = ?", "task_env", id).Pluck("data_id", &taskIDs)
+	database.DB.Model(&models.DataRelation{}).Where("type = ? AND relate_id = ?", constant.RelationTypeTaskEnv, id).Pluck("data_id", &taskIDs)
 	if len(taskIDs) > 0 {
 		database.DB.Where("id IN ?", taskIDs).Find(&associatedTasks)
 	}
@@ -157,7 +157,7 @@ func (es *EnvService) DeleteEnvVar(id string, force bool) (bool, []models.Task)
 	if force {
 		err := database.DB.Transaction(func(tx *gorm.DB) error {
 			// Delete the relations mapping this env to any tasks
-			if err := tx.Where("type = ? AND relate_id = ?", "task_env", id).Delete(&models.DataRelation{}).Error; err != nil {
+			if err := tx.Where("type = ? AND relate_id = ?", constant.RelationTypeTaskEnv, id).Delete(&models.DataRelation{}).Error; err != nil {
 				return err
 			}
 			// Delete the env var