diff --git a/4K.txt b/4K.txt
index 4693e2c..22fa520 100644
--- a/4K.txt
+++ b/4K.txt
@@ -1,7 +1,6 @@
 CCTV-4K 超高清,http://10.26.0.23:4000/udp/239.253.224.122:8000
 爱上4K,http://10.26.0.23:4000/udp/239.253.224.102:8000
 北京卫视4K,http://10.26.0.23:4000/udp/239.253.224.200:8000
-北京纪实科教8K,http://8kdown.brtvcloud.com/8klive/8kliveok.m3u8?txSecret=a9cfb6acb08a9fe154a8ba6d0226cfef&txTime=71697CD5
 广东卫视4K,http://10.26.0.23:4000/udp/239.253.224.108:8000
 深圳卫视4K,http://10.26.0.23:4000/udp/239.253.224.61:8000
 苏州4K,https://live-auth.51kandianshi.com/szgd/csztv4k_4k.m3u8