diff --git a/pkg/watcher/coach.go b/pkg/watcher/coach.go
index fd95bad..3d12cec 100644
--- a/pkg/watcher/coach.go
+++ b/pkg/watcher/coach.go
@@ -110,6 +110,9 @@ func (c *CoachOutlet) Watch() {
 }
 
 func (c *CoachOutlet) getInventory() bool {
+	if c.detail == nil {
+		return false
+	}
 	// 请求
 	subCtx, cancel := context.WithTimeout(c.ctx, time.Minute*5)
 	inventory, err := c.requestProductInventory(subCtx)