diff --git a/app/common/service/GamePeriodService.php b/app/common/service/GamePeriodService.php
new file mode 100644
index 0000000..fd679cd
--- /dev/null
+++ b/app/common/service/GamePeriodService.php
@@ -0,0 +1,148 @@
+<?php
+
+declare(strict_types=1);
+
+namespace app\common\service;
+
+use support\think\Db;
+use Throwable;
+
+/**
+ * 全局期号：创建与 game_config 开关（自动新建下一期）
+ */
+final class GamePeriodService
+{
+    public const KEY_AUTO_CREATE = 'period_auto_create_enabled';
+
+    public const KEY_MANUAL_CREATE = 'period_manual_create_enabled';
+
+    /** 进行中状态：未结束则不可再开新期 */
+    private const ACTIVE_STATUSES = [0, 1, 2, 3];
+
+    public static function getConfigBool(string $key): bool
+    {
+        $row = Db::name('game_config')->where('config_key', $key)->find();
+        if (!$row) {
+            return false;
+        }
+        $v = $row['config_value'] ?? '';
+        return $v === '1' || $v === 1;
+    }
+
+    /**
+     * @return array{period_auto_create_enabled: int, period_manual_create_enabled: int}
+     */
+    public static function getPeriodSettings(): array
+    {
+        return [
+            'period_auto_create_enabled'  => self::getConfigBool(self::KEY_AUTO_CREATE) ? 1 : 0,
+            'period_manual_create_enabled' => self::getConfigBool(self::KEY_MANUAL_CREATE) ? 1 : 0,
+        ];
+    }
+
+    /**
+     * @param array{period_auto_create_enabled?: int|string, period_manual_create_enabled?: int|string} $data
+     */
+    public static function savePeriodSettings(array $data): void
+    {
+        $now = time();
+        $auto = self::truthyConfigInput($data['period_auto_create_enabled'] ?? null) ? '1' : '0';
+        $manual = self::truthyConfigInput($data['period_manual_create_enabled'] ?? null) ? '1' : '0';
+        self::upsertConfig(self::KEY_AUTO_CREATE, $auto, 'int', '是否允许定时任务自动创建下一期（全局仅一局）', $now);
+        self::upsertConfig(self::KEY_MANUAL_CREATE, $manual, 'int', '是否允许后台手动创建下一期', $now);
+    }
+
+    public static function hasActivePeriod(): bool
+    {
+        $count = Db::name('game_period')->whereIn('status', self::ACTIVE_STATUSES)->count();
+        return $count > 0;
+    }
+
+    /**
+     * 自动开奖任务调用：开启自动创建且无进行中期号时插入新期
+     */
+    public static function tickAutoCreate(): void
+    {
+        if (!self::getConfigBool(self::KEY_AUTO_CREATE)) {
+            return;
+        }
+        if (self::hasActivePeriod()) {
+            return;
+        }
+        try {
+            self::createNextPeriodRow();
+        } catch (Throwable) {
+            // 并发下可能重复，忽略
+        }
+    }
+
+    /**
+     * @return array{ok: bool, msg: string, period_no?: string}
+     */
+    public static function createNextPeriodForManual(): array
+    {
+        if (!self::getConfigBool(self::KEY_MANUAL_CREATE)) {
+            return ['ok' => false, 'msg' => '未开启「手动创建下一期」开关'];
+        }
+        if (self::hasActivePeriod()) {
+            return ['ok' => false, 'msg' => '存在未结束期号，无法新建'];
+        }
+        try {
+            $periodNo = self::createNextPeriodRow();
+            return ['ok' => true, 'msg' => '已创建新期', 'period_no' => $periodNo];
+        } catch (Throwable $e) {
+            return ['ok' => false, 'msg' => $e->getMessage()];
+        }
+    }
+
+    /**
+     * @throws Throwable
+     */
+    private static function createNextPeriodRow(): string
+    {
+        $periodNo = self::generatePeriodNo();
+        $now = time();
+        Db::name('game_period')->insert([
+            'period_no'       => $periodNo,
+            'period_start_at' => $now,
+            'status'          => 0,
+            'draw_mode'       => 0,
+            'void_reason'     => '',
+            'create_time'     => $now,
+            'update_time'     => $now,
+        ]);
+        return $periodNo;
+    }
+
+    private static function generatePeriodNo(): string
+    {
+        return date('Ymd-His') . '-' . substr(bin2hex(random_bytes(4)), 0, 8);
+    }
+
+    private static function truthyConfigInput(mixed $v): bool
+    {
+        return $v === 1 || $v === '1' || $v === true;
+    }
+
+    private static function upsertConfig(string $key, string $value, string $valueType, string $remark, int $now): void
+    {
+        $exists = Db::name('game_config')->where('config_key', $key)->find();
+        if ($exists) {
+            Db::name('game_config')->where('config_key', $key)->update([
+                'config_value' => $value,
+                'value_type'   => $valueType,
+                'remark'       => $remark,
+                'update_time'  => $now,
+            ]);
+            return;
+        }
+        Db::name('game_config')->insert([
+            'config_key'   => $key,
+            'config_value' => $value,
+            'value_type'   => $valueType,
+            'remark'       => $remark,
+            'create_time'  => $now,
+            'update_time'  => $now,
+        ]);
+    }
+}
diff --git a/app/process/GamePeriodAutoTicker.php b/app/process/GamePeriodAutoTicker.php
new file mode 100644
index 0000000..9fc089a
--- /dev/null
+++ b/app/process/GamePeriodAutoTicker.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace app\process;
+
+use app\common\service\GamePeriodService;
+use Workerman\Timer;
+
+/**
+ * 定时检查：开启自动创建且无进行中期号时插入新期（全局仅一局）
+ */
+class GamePeriodAutoTicker
+{
+    public function onWorkerStart(): void
+    {
+        Timer::add(15, static function (): void {
+            GamePeriodService::tickAutoCreate();
+        });
+    }
+}
diff --git a/config/process.php b/config/process.php
index 892dc82..1b630a2 100644
--- a/config/process.php
+++ b/config/process.php
@@ -35,6 +35,13 @@ return [
             'publicPath' => public_path()
         ]
     ],
+    // 游戏期号：自动创建下一期（依赖 game_config.period_auto_create_enabled）
+    'gamePeriodAutoTicker' => [
+        'handler'     => app\process\GamePeriodAutoTicker::class,
+        'count'       => 1,
+        'reloadable'  => false,
+    ],
+
     // File update detection and automatic reload
     'monitor' => [
         'handler' => app\process\Monitor::class,