diff --git a/back/config/util.ts b/back/config/util.ts
index dc6fd26c..7d61f74f 100644
--- a/back/config/util.ts
+++ b/back/config/util.ts
@@ -417,6 +417,27 @@ export async function getPid(cmd: string) {
   return pid ? Number(pid) : undefined;
 }
 
+export async function getAllPids(cmd: string): Promise<number[]> {
+  const taskCommand = `ps -eo pid,command | grep "${cmd}" | grep -v grep | awk '{print $1}'`;
+  const pidsStr = await promiseExec(taskCommand);
+  if (!pidsStr) return [];
+  return pidsStr
+    .split('\n')
+    .map((p) => Number(p.trim()))
+    .filter((p) => !isNaN(p) && p > 0);
+}
+
+export async function killAllTasks(cmd: string): Promise<void> {
+  const pids = await getAllPids(cmd);
+  for (const pid of pids) {
+    try {
+      await killTask(pid);
+    } catch (error) {
+      // Ignore errors if process already terminated
+    }
+  }
+}
+
 interface IVersion {
   version: string;
   changeLogLink: string;
diff --git a/back/data/cron.ts b/back/data/cron.ts
index 422b58e4..f2093798 100644
--- a/back/data/cron.ts
+++ b/back/data/cron.ts
@@ -22,6 +22,7 @@ export class Crontab {
   task_before?: string;
   task_after?: string;
   log_name?: string;
+  allow_multiple_instances?: 1 | 0;
 
   constructor(options: Crontab) {
     this.name = options.name;
@@ -47,6 +48,7 @@ export class Crontab {
     this.task_before = options.task_before;
     this.task_after = options.task_after;
     this.log_name = options.log_name;
+    this.allow_multiple_instances = options.allow_multiple_instances || 0;
   }
 }
 
@@ -87,4 +89,5 @@ export const CrontabModel = sequelize.define<CronInstance>('Crontab', {
   task_before: DataTypes.STRING,
   task_after: DataTypes.STRING,
   log_name: DataTypes.STRING,
+  allow_multiple_instances: DataTypes.NUMBER,
 });
diff --git a/back/services/cron.ts b/back/services/cron.ts
index cd2975bd..ad08998c 100644
--- a/back/services/cron.ts
+++ b/back/services/cron.ts
@@ -9,6 +9,7 @@ import {
   getFileContentByName,
   fileExist,
   killTask,
+  killAllTasks,
   getUniqPath,
   safeJSONParse,
   isDemoEnv,
@@ -28,7 +29,7 @@ import { logStreamManager } from '../shared/logStreamManager';
 
 @Service()
 export default class CronService {
-  constructor(@Inject('logger') private logger: winston.Logger) { }
+  constructor(@Inject('logger') private logger: winston.Logger) {}
 
   private isNodeCron(cron: Crontab) {
     const { schedule, extra_schedules } = cron;
@@ -57,7 +58,9 @@ export default class CronService {
     }
     let uniqPath = await getUniqPath(command, `${id}`);
     if (log_name) {
-      const normalizedLogName = log_name.startsWith('/') ? log_name : path.join(config.logPath, log_name);
+      const normalizedLogName = log_name.startsWith('/')
+        ? log_name
+        : path.join(config.logPath, log_name);
       if (normalizedLogName.startsWith(config.logPath)) {
         uniqPath = log_name;
       }
@@ -162,7 +165,7 @@ export default class CronService {
       let cron;
       try {
         cron = await this.getDb({ id });
-      } catch (err) { }
+      } catch (err) {}
       if (!cron) {
         continue;
       }
@@ -462,12 +465,17 @@ export default class CronService {
   public async stop(ids: number[]) {
     const docs = await CrontabModel.findAll({ where: { id: ids } });
     for (const doc of docs) {
-      if (doc.pid) {
-        try {
-          await killTask(doc.pid);
-        } catch (error) {
-          this.logger.error(error);
-        }
+      // Kill all running instances of this task
+      try {
+        const command = this.makeCommand(doc);
+        await killAllTasks(command);
+        this.logger.info(
+          `[panel][停止所有运行中的任务实例] 任务ID: ${doc.id}, 命令: ${command}`,
+        );
+      } catch (error) {
+        this.logger.error(
+          `[panel][停止任务失败] 任务ID: ${doc.id}, 错误: ${error}`,
+        );
       }
     }
 
@@ -498,7 +506,10 @@ export default class CronService {
 
         let { id, command, log_name } = cron;
 
-        const uniqPath = log_name === '/dev/null' ? (await getUniqPath(command, `${id}`)) : log_name;
+        const uniqPath =
+          log_name === '/dev/null'
+            ? await getUniqPath(command, `${id}`)
+            : log_name;
         const logTime = dayjs().format('YYYY-MM-DD-HH-mm-ss-SSS');
         const logDirPath = path.resolve(config.logPath, `${uniqPath}`);
         await fs.mkdir(logDirPath, { recursive: true });
diff --git a/back/shared/runCron.ts b/back/shared/runCron.ts
index 72b6e646..31f3ada4 100644
--- a/back/shared/runCron.ts
+++ b/back/shared/runCron.ts
@@ -8,12 +8,18 @@ import { killTask } from '../config/util';
 export function runCron(cmd: string, cron: ICron): Promise<number | void> {
   return taskLimit.runWithCronLimit(cron, () => {
     return new Promise(async (resolve: any) => {
-      // Check if the cron is already running and stop it
+      // Check if the cron is already running and stop it (only if multiple instances are not allowed)
       try {
         const existingCron = await CrontabModel.findOne({
           where: { id: Number(cron.id) },
         });
+
+        // Default to single instance mode (0) for backward compatibility
+        const allowMultipleInstances =
+          existingCron?.allow_multiple_instances === 1;
+
         if (
+          !allowMultipleInstances &&
           existingCron &&
           existingCron.pid &&
           (existingCron.status === CrontabStatus.running ||
diff --git a/back/validation/schedule.ts b/back/validation/schedule.ts
index 60d82bcd..475859a1 100644
--- a/back/validation/schedule.ts
+++ b/back/validation/schedule.ts
@@ -64,7 +64,11 @@ export const commonCronSchema = {
         return value;
       }
 
-      if (!/^(?!.*(?:^|\/)\.{1,2}(?:\/|$))(?:\/)?(?:[\w.-]+\/)*[\w.-]+\/?$/.test(value)) {
+      if (
+        !/^(?!.*(?:^|\/)\.{1,2}(?:\/|$))(?:\/)?(?:[\w.-]+\/)*[\w.-]+\/?$/.test(
+          value,
+        )
+      ) {
         return helpers.error('string.pattern.base');
       }
       if (value.length > 100) {
@@ -77,4 +81,5 @@ export const commonCronSchema = {
       'string.max': '日志名称不能超过100个字符',
       'string.unsafePath': '绝对路径必须在日志目录内或使用 /dev/null',
     }),
+  allow_multiple_instances: Joi.number().optional().valid(0, 1),
 };