diff --git a/bbclearn/bbc.go b/bbclearn/bbc.go
index 1211472..0344610 100644
--- a/bbclearn/bbc.go
+++ b/bbclearn/bbc.go
@@ -18,6 +18,9 @@ func LearnParse(s string, recentDay int) string {
 	var item []rss2.Item
 	item = append(item, full(document, recentDay))
 	item = append(item, items(document, recentDay)...)
+	if len(item) < 1 {
+		return ""
+	}
 	rss := rss2.Rss2{
 		Title:         "BBC 英语教学",
 		Link:          "https://www.bbc.co.uk/learningenglish/chinese/",