diff --git a/install-dat-release.sh b/install-dat-release.sh
index e85b278..523a692 100644
--- a/install-dat-release.sh
+++ b/install-dat-release.sh
@@ -17,6 +17,13 @@ V2RAY="/usr/local/lib/v2ray/"
 DOWNLOAD_LINK_GEOIP="https://github.com/v2ray/geoip/releases/latest/download/geoip.dat"
 DOWNLOAD_LINK_GEOSITE="https://github.com/v2ray/domain-list-community/releases/latest/download/dlc.dat"
 
+check_if_running_as_root() {
+    if [ $UID != "0" ]; then
+        echo "error: You must run this script as root!"
+        exit 1
+    fi
+}
+
 download_geoip() {
     curl -L -H 'Cache-Control: no-cache' -o "${V2RAY}geoip.dat.new" "$DOWNLOAD_LINK_GEOIP"
     if [ "$?" -ne '0' ]; then
@@ -64,6 +71,7 @@ rename_new() {
 }
 
 main() {
+    check_if_running_as_root
     download_geoip
     download_geosite
     rename_new
diff --git a/install-release.sh b/install-release.sh
index b415eab..5a459f8 100644
--- a/install-release.sh
+++ b/install-release.sh
@@ -12,6 +12,13 @@
 # If the script executes incorrectly, go to:
 # https://github.com/v2fly/fhs-install-v2ray/issues
 
+check_if_running_as_root() {
+    if [ $UID != "0" ]; then
+        echo "error: You must run this script as root!"
+        exit 1
+    fi
+}
+
 identify_the_operating_system_and_architecture() {
     if [[ "$(uname)" == 'Linux' ]]; then
         case "$(uname -m)" in
@@ -459,6 +466,7 @@ show_help() {
 }
 
 main() {
+    check_if_running_as_root
     identify_the_operating_system_and_architecture
     judgment_parameters "$@"