diff --git a/06.PVE制作DNS服务器.md b/06.PVE制作DNS服务器.md
index 24e7bcc..e4580bf 100644
--- a/06.PVE制作DNS服务器.md
+++ b/06.PVE制作DNS服务器.md
@@ -437,7 +437,7 @@ log-facility=/var/log/dnsmasq.log
 log-async=20
 
 cache-size=1024
-max-cache-ttl=14400
+max-cache-ttl=7200
 edns-packet-max=1232
 rebind-domain-ok=/fox.home.arpa/
 
diff --git a/07.PVE制作TS服务器.md b/07.PVE制作TS服务器.md
index 3565ab6..48b7469 100644
--- a/07.PVE制作TS服务器.md
+++ b/07.PVE制作TS服务器.md
@@ -512,7 +512,7 @@ log-facility=/var/log/dnsmasq.log
 log-async=20
 
 cache-size=1024
-max-cache-ttl=14400
+max-cache-ttl=7200
 edns-packet-max=1232
 rebind-domain-ok=/fox.home.arpa/
 
diff --git a/src/debian/debian_dns_dnsmasq.conf b/src/debian/debian_dns_dnsmasq.conf
index 6d94171..8abfb92 100644
--- a/src/debian/debian_dns_dnsmasq.conf
+++ b/src/debian/debian_dns_dnsmasq.conf
@@ -10,7 +10,7 @@ log-facility=/var/log/dnsmasq.log
 log-async=20
 
 cache-size=1024
-max-cache-ttl=14400
+max-cache-ttl=7200
 edns-packet-max=1232
 rebind-domain-ok=/fox.home.arpa/
 
diff --git a/src/debian/debian_ts_dnsmasq.conf b/src/debian/debian_ts_dnsmasq.conf
index 7fdfc30..df02b4f 100644
--- a/src/debian/debian_ts_dnsmasq.conf
+++ b/src/debian/debian_ts_dnsmasq.conf
@@ -10,7 +10,7 @@ log-facility=/var/log/dnsmasq.log
 log-async=20
 
 cache-size=1024
-max-cache-ttl=14400
+max-cache-ttl=7200
 edns-packet-max=1232
 rebind-domain-ok=/fox.home.arpa/