diff --git a/config/config_env.yaml b/config/config_env.yaml
index b0f5953..08315f4 100644
--- a/config/config_env.yaml
+++ b/config/config_env.yaml
@@ -5,9 +5,12 @@ server:
 
 ollama:
   base_url: "http://192.168.6.115:11434"
-  model: "qwen3-coder:480b-cloud"
-  generate_model: "qwen3-coder:480b-cloud"
-  mapping_model: "deepseek-v3.2:cloud"
+  model: "qwen3:8b"
+  generate_model: "qwen3:8b"
+  mapping_model: "qwen3:8b"
+  # model: "qwen3-coder:480b-cloud"
+  # generate_model: "qwen3-coder:480b-cloud"
+  # mapping_model: "deepseek-v3.2:cloud"
   vl_model: "qwen2.5vl:7b"
   timeout: "120s"
   level: "info"
diff --git a/internal/biz/ding_talk_bot.go b/internal/biz/ding_talk_bot.go
index 5fbd711..5ae8f27 100644
--- a/internal/biz/ding_talk_bot.go
+++ b/internal/biz/ding_talk_bot.go
@@ -283,12 +283,31 @@ func (d *DingTalkBotBiz) fallbackToGroupCreation(ctx context.Context, requireDat
 		}
 	}
 
+	// 4. 匹配问题类型
+	var issueType model.AiIssueType
+	for _, it := range allIssueTypes {
+		if it.Name == classification.IssueTypeName {
+			issueType = it
+			break
+		}
+	}
+
 	if sys.SysID == 0 {
-		// 无法明确系统，询问用户
-		statusKey := fmt.Sprintf("ai_bot:session:status:%s", requireData.Req.SenderStaffId)
-		d.redisCli.Set(ctx, statusKey, "WAITING_FOR_SYS_CONFIRM", time.Hour)
-		entitys.ResText(requireData.Ch, "", "抱歉，我无法确定您咨询的是哪个系统。请告诉我具体系统名称（如：直连天下系统、货易通系统），以便我为您安排对应的技术支持。")
-		return nil
+
+		// 判断全局是否存在该规则
+		_, found, _ := d.issueImpl.IssueAssignRule.FindOne(
+			d.issueImpl.WithSysID(0),
+			d.issueImpl.WithIssueTypeID(issueType.ID),
+			d.issueImpl.WithStatus(1),
+		)
+		if !found {
+			// 无法明确系统，且全局无该能力，询问用户
+			statusKey := fmt.Sprintf("ai_bot:session:status:%s", requireData.Req.SenderStaffId)
+			d.redisCli.Set(ctx, statusKey, "WAITING_FOR_SYS_CONFIRM", time.Hour)
+			entitys.ResText(requireData.Ch, "", "抱歉，我无法确定您咨询的是哪个系统。请告诉我具体系统名称（如：直连天下系统、货易通系统），以便我为您安排对应的技术支持。")
+			return nil
+		}
+
 	}
 
 	return d.fallbackToGroupCreationWithSys(ctx, requireData, &sys)
@@ -323,8 +342,18 @@ func (d *DingTalkBotBiz) fallbackToGroupCreationWithSys(ctx context.Context, req
 		d.issueImpl.WithStatus(1),
 	)
 	if !found {
-		log.Errorf("assign rule not found for sys %s and issue type %s; err: %v", sys.SysName, issueType.Name, err)
-		return fmt.Errorf("分配规则 %s-%s 不存在", sys.SysName, issueType.Name)
+		// 创建默认分配规则 - 暂不考虑并发，有唯一索引
+		rule = model.AiIssueAssignRule{
+			SysID:       sys.SysID,
+			IssueTypeID: issueType.ID,
+			Status:      1,
+		}
+		if err := d.issueImpl.IssueAssignRule.Create(&rule); err != nil {
+			log.Errorf("create assign rule for sys %s and issue type %s failed; err: %v", sys.SysName, issueType.Name, err)
+			return fmt.Errorf("创建分配规则 %s-%s 失败", sys.SysName, issueType.Name)
+		} else {
+			log.Infof("create assign rule for sys %s and issue type %s success; rule id: %d", sys.SysName, issueType.Name, rule.ID)
+		}
 	}
 
 	var staffIds []string
diff --git a/internal/biz/do/handle.go b/internal/biz/do/handle.go
index 9b705a8..6508a69 100644
--- a/internal/biz/do/handle.go
+++ b/internal/biz/do/handle.go
@@ -137,10 +137,10 @@ func (r *Handle) ClassifyIssue(ctx context.Context, systems []string, issueTypes
 可用问题类型: [%s]
 
 请仅以 JSON 格式回复，包含以下字段：
-- sys_name: 系统名称
+- sys_name: 系统名称，若未提及系统关键词，则为"全局"
 - issue_type_name: 问题类型名称
 - summary: 15字以内的问题简述（用于群命名）
-- reason: 分类理由`, strings.Join(systems, ", "), strings.Join(issueTypes, ", "))
+- reason: 分类判断理由；系统名称判断理由`, strings.Join(systems, ", "), strings.Join(issueTypes, ", "))
 
 	messages := []api.Message{
 		{Role: "system", Content: systemPrompt},