diff --git a/scripts/backup.sh b/scripts/backup.sh
index 1866690..43babfd 100755
--- a/scripts/backup.sh
+++ b/scripts/backup.sh
@@ -2,7 +2,7 @@
 # backup.sh — 备份 moziplus v2 数据到 NAS
 set -euo pipefail
 
-TARGET_DIR="$HOME/.sanguo_projects/sanguo_moziplus_v2"
+TARGET_DIR="${MOZIPLUS_V2_DIR:-$HOME/.sanguo_projects/sanguo_moziplus_v2}"
 NAS_BASE="/Volumes/stock"
 BACKUP_SUBDIR="moziplus-v2-backups"
 PM2_NAME="sanguo-moziplus-v2"
diff --git a/scripts/reset-data.sh b/scripts/reset-data.sh
index 6dae53c..c46e8f4 100755
--- a/scripts/reset-data.sh
+++ b/scripts/reset-data.sh
@@ -2,7 +2,7 @@
 # reset-data.sh — 清空 moziplus v2 运行数据（保留配置）
 set -euo pipefail
 
-TARGET_DIR="$HOME/.sanguo_projects/sanguo_moziplus_v2"
+TARGET_DIR="${MOZIPLUS_V2_DIR:-$HOME/.sanguo_projects/sanguo_moziplus_v2}"
 PM2_NAME="sanguo-moziplus-v2"
 CONFIRM=false
 PROJECT_FILTER=""
diff --git a/scripts/uninstall.sh b/scripts/uninstall.sh
index 262822b..0a7eed9 100755
--- a/scripts/uninstall.sh
+++ b/scripts/uninstall.sh
@@ -2,7 +2,7 @@
 # uninstall.sh — 完全卸载 moziplus v2
 set -euo pipefail
 
-TARGET_DIR="$HOME/.sanguo_projects/sanguo_moziplus_v2"
+TARGET_DIR="${MOZIPLUS_V2_DIR:-$HOME/.sanguo_projects/sanguo_moziplus_v2}"
 PM2_NAME="sanguo-moziplus-v2"
 CONFIRM=false
 KEEP_DATA=false