diff --git a/scripts/deploy/bin/deploy.sh b/scripts/deploy/bin/deploy.sh
index d8ed9ecb..1339dd26 100644
--- a/scripts/deploy/bin/deploy.sh
+++ b/scripts/deploy/bin/deploy.sh
@@ -22,6 +22,11 @@ source "$CONFIG_FILE"
 : "${RUN_SECURITY_CHECKS:=true}"
 : "${RUN_LAUNCH_GATE:=true}"
 : "${RESTART_SERVICES:=true}"
+: "${NPM_REGISTRY:=https://registry.npmjs.org/}"
+: "${NPM_FETCH_RETRIES:=5}"
+: "${NPM_FETCH_RETRY_MINTIMEOUT:=20000}"
+: "${NPM_FETCH_RETRY_MAXTIMEOUT:=120000}"
+: "${NPM_FETCH_TIMEOUT:=300000}"
 
 LOCK_FILE="${LOCK_FILE:-/tmp/tiku-saas-deploy.lock}"
 mkdir -p "$APP_ROOT" "$WWW_ROOT/student" "$WWW_ROOT/tenant-admin" "$WWW_ROOT/platform-admin"
@@ -94,7 +99,12 @@ CURRENT_SHA="$(git rev-parse --short=12 HEAD)"
 log "Deploying commit $CURRENT_SHA"
 
 log "Installing dependencies with npm ci..."
-npm ci
+npm ci \
+  --registry="$NPM_REGISTRY" \
+  --fetch-retries="$NPM_FETCH_RETRIES" \
+  --fetch-retry-mintimeout="$NPM_FETCH_RETRY_MINTIMEOUT" \
+  --fetch-retry-maxtimeout="$NPM_FETCH_RETRY_MAXTIMEOUT" \
+  --fetch-timeout="$NPM_FETCH_TIMEOUT"
 
 if [[ "$RUN_SECURITY_CHECKS" == "true" ]]; then
   log "Running repository security scan..."
diff --git a/scripts/deploy/env/deploy.env.example b/scripts/deploy/env/deploy.env.example
index 302e0497..c876d95a 100644
--- a/scripts/deploy/env/deploy.env.example
+++ b/scripts/deploy/env/deploy.env.example
@@ -16,3 +16,10 @@ RUNTIME_CONFIG_DIR=/etc/tiku-saas/runtime-config
 RUN_SECURITY_CHECKS=true
 RUN_LAUNCH_GATE=true
 RESTART_SERVICES=true
+
+# Use https://registry.npmmirror.com on mainland China servers if npmjs times out.
+NPM_REGISTRY=https://registry.npmjs.org/
+NPM_FETCH_RETRIES=5
+NPM_FETCH_RETRY_MINTIMEOUT=20000
+NPM_FETCH_RETRY_MAXTIMEOUT=120000
+NPM_FETCH_TIMEOUT=300000