diff --git a/src/gateway.ts b/src/gateway.ts
index 1e78a0d..4eb097a 100644
--- a/src/gateway.ts
+++ b/src/gateway.ts
@@ -353,20 +353,21 @@ function buildAttachmentSummaries(
 // 区分 gateway restart（进程重启）和 health-monitor 断线重连
 const accountFirstReadySet = new Set<string>();
 
-const STARTUP_MARKER_FILE = path.join(getQQBotDataDir("data"), "startup-marker.json");
-
 /**
  * 判断是否为首次安装或版本更新，返回对应的问候语。
  * - 首次安装 / 版本变更 → "Haha，我的'灵魂'已上线，随时等你吩咐。"
  * - 普通重启（同版本） → null（不发送）
+ *
+ * marker 文件按 accountId 隔离，避免多账号场景下第一个账号写入后其他账号被跳过。
  */
-function getStartupGreeting(): string | null {
+function getStartupGreeting(accountId: string): string | null {
+  const markerFile = path.join(getQQBotDataDir("data"), `startup-marker-${accountId}.json`);
   const currentVersion = getPluginVersion();
   let isFirstOrUpdated = true;
 
   try {
-    if (fs.existsSync(STARTUP_MARKER_FILE)) {
-      const data = JSON.parse(fs.readFileSync(STARTUP_MARKER_FILE, "utf8"));
+    if (fs.existsSync(markerFile)) {
+      const data = JSON.parse(fs.readFileSync(markerFile, "utf8"));
       if (data.version === currentVersion) {
         isFirstOrUpdated = false;
       }
@@ -382,7 +383,7 @@ function getStartupGreeting(): string | null {
 
   // 更新 marker 文件
   try {
-    fs.writeFileSync(STARTUP_MARKER_FILE, JSON.stringify({
+    fs.writeFileSync(markerFile, JSON.stringify({
       version: currentVersion,
       startedAt: new Date().toISOString(),
       greetedAt: new Date().toISOString(),
@@ -531,7 +532,7 @@ export async function startGateway(ctx: GatewayContext): Promise<void> {
   const sendStartupGreetings = (trigger: "READY" | "RESUMED") => {
     (async () => {
       try {
-        const greeting = getStartupGreeting();
+        const greeting = getStartupGreeting(account.accountId);
         if (!greeting) {
           log?.info(`[qqbot:${account.accountId}] Skipping startup greeting (debounced, trigger=${trigger})`);
           return;
diff --git a/tests/e2e.sh b/tests/e2e.sh
index 0b36d60..cb71446 100644
--- a/tests/e2e.sh
+++ b/tests/e2e.sh
@@ -718,17 +718,33 @@ else
   record_result "runtime.slash_command_intercepted" "skip" "gateway.log not found"
 fi
 
-# 8.10 startup-marker.json 文件验证
-MARKER_FILE="$HOME/.openclaw/qqbot/data/startup-marker.json"
-if [ -f "$MARKER_FILE" ]; then
-  MARKER_CONTENT=$(cat "$MARKER_FILE" 2>/dev/null || echo "{}")
+# 8.10 startup-marker-{accountId}.json 文件验证（per-account marker）
+# 现在每个账号各自有一个 startup-marker 文件
+MARKER_DIR="$HOME/.openclaw/qqbot/data"
+MARKER_FOUND=0
+if [ -d "$MARKER_DIR" ]; then
+  for mf in "$MARKER_DIR"/startup-marker-*.json; do
+    [ -f "$mf" ] || continue
+    MARKER_FOUND=1
+    MF_BASE=$(basename "$mf")
+    MARKER_CONTENT=$(cat "$mf" 2>/dev/null || echo "{}")
+    if echo "$MARKER_CONTENT" | jq -e '.version' &>/dev/null; then
+      record_result "runtime.startup_marker_valid.${MF_BASE}" "pass"
+    else
+      record_result "runtime.startup_marker_valid.${MF_BASE}" "fail" "${MF_BASE} exists but has no 'version' field"
+    fi
+  done
+fi
+# 兼容旧版单文件 marker
+if [ "$MARKER_FOUND" -eq 0 ] && [ -f "$MARKER_DIR/startup-marker.json" ]; then
+  MARKER_CONTENT=$(cat "$MARKER_DIR/startup-marker.json" 2>/dev/null || echo "{}")
   if echo "$MARKER_CONTENT" | jq -e '.version' &>/dev/null; then
-    record_result "runtime.startup_marker_valid" "pass"
+    record_result "runtime.startup_marker_valid" "pass" "(legacy single-file marker)"
   else
     record_result "runtime.startup_marker_valid" "fail" "startup-marker.json exists but has no 'version' field"
   fi
-else
-  record_result "runtime.startup_marker_valid" "skip" "startup-marker.json not yet created (first run may not have completed)"
+elif [ "$MARKER_FOUND" -eq 0 ]; then
+  record_result "runtime.startup_marker_valid" "skip" "no startup-marker files found (first run may not have completed)"
 fi
 
 # 8.11 update-checker 模块单元验证（Node.js import 测试）