diff --git a/sub-url.txt b/sub-url.txt
new file mode 100644
index 0000000000000000000000000000000000000000..2a7bf5273e188ad5dded37e24ed4ef20036255ee
--- /dev/null
+++ b/sub-url.txt
@@ -0,0 +1,10 @@
+https://docs.gitcode.net/spring
+https://docs.gitcode.net/spring/guide
+https://docs.gitcode.net/k8s
+https://docs.gitcode.net/k8s/guide
+https://docs.gitcode.net/mysql
+https://docs.gitcode.net/mysql/guide
+https://docs.gitcode.net/pg
+https://docs.gitcode.net/pg/guide
+https://docs.gitcode.net/mongodb
+https://docs.gitcode.net/mongodb/guide
\ No newline at end of file