diff --git a/services/room-service/internal/room/service/admin_config_pin.go b/services/room-service/internal/room/service/admin_config_pin.go
index da906db1..328afe5c 100644
--- a/services/room-service/internal/room/service/admin_config_pin.go
+++ b/services/room-service/internal/room/service/admin_config_pin.go
@@ -56,7 +56,7 @@ func (s *Service) AdminListRoomPins(ctx context.Context, req *roomv1.AdminListRo
 		Keyword:  strings.TrimSpace(req.GetKeyword()),
 		Status:   strings.TrimSpace(req.GetStatus()),
 		RegionID: req.GetVisibleRegionId(),
-		PinType:  normalizeRoomPinType(req.GetPinType()),
+		PinType:  normalizeRoomPinListType(req.GetPinType()),
 		NowMS:    nowMS,
 	})
 	if err != nil {
@@ -67,7 +67,7 @@ func (s *Service) AdminListRoomPins(ctx context.Context, req *roomv1.AdminListRo
 			slog.Int("page_size", int(req.GetPageSize())),
 			slog.String("status", strings.TrimSpace(req.GetStatus())),
 			slog.Int64("visible_region_id", req.GetVisibleRegionId()),
-			slog.String("pin_type", normalizeRoomPinType(req.GetPinType())),
+			slog.String("pin_type", normalizeRoomPinListType(req.GetPinType())),
 			slog.Bool("has_keyword", strings.TrimSpace(req.GetKeyword()) != ""),
 		)
 		return nil, err
@@ -177,6 +177,20 @@ func normalizeRoomPinType(pinType string) string {
 	}
 }
 
+func normalizeRoomPinListType(pinType string) string {
+	switch strings.ToLower(strings.TrimSpace(pinType)) {
+	case roomPinTypeRegion:
+		return roomPinTypeRegion
+	case roomPinTypeGlobal:
+		return roomPinTypeGlobal
+	case roomPinTypeCountry:
+		return roomPinTypeCountry
+	default:
+		// 列表空类型代表“不按置顶类型筛选”；不能复用创建默认 region，否则国家置顶会从后台总列表消失。
+		return ""
+	}
+}
+
 func normalizeAdminRoomPinInterval(pinnedAtMS int64, expiresAtMS int64, durationDays int64, nowMS int64) (int64, int64, error) {
 	if pinnedAtMS <= 0 {
 		pinnedAtMS = nowMS
diff --git a/services/room-service/internal/room/service/admin_config_pin_test.go b/services/room-service/internal/room/service/admin_config_pin_test.go
new file mode 100644
index 00000000..d513df38
--- /dev/null
+++ b/services/room-service/internal/room/service/admin_config_pin_test.go
@@ -0,0 +1,31 @@
+package service
+
+import "testing"
+
+func TestNormalizeRoomPinListTypeDoesNotDefaultBlankToRegion(t *testing.T) {
+	tests := []struct {
+		name    string
+		pinType string
+		want    string
+	}{
+		{name: "blank means all pin types", pinType: "", want: ""},
+		{name: "space means all pin types", pinType: "   ", want: ""},
+		{name: "unknown means all pin types", pinType: "unknown", want: ""},
+		{name: "region filter is preserved", pinType: "region", want: roomPinTypeRegion},
+		{name: "global filter is preserved", pinType: "global", want: roomPinTypeGlobal},
+		{name: "country filter is preserved", pinType: "country", want: roomPinTypeCountry},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := normalizeRoomPinListType(tt.pinType); got != tt.want {
+				t.Fatalf("list pin type mismatch: got %q want %q", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestNormalizeRoomPinTypeKeepsCreateCompatibility(t *testing.T) {
+	if got := normalizeRoomPinType(""); got != roomPinTypeRegion {
+		t.Fatalf("blank create pin type must keep legacy region default, got %q", got)
+	}
+}