diff --git a/app/Models/BargainActivity.php b/app/Models/BargainActivity.php
new file mode 100644
index 00000000..85a36932
--- /dev/null
+++ b/app/Models/BargainActivity.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class BargainActivity extends Model
+{
+    use HasFactory;
+}
diff --git a/app/Models/BargainOrder.php b/app/Models/BargainOrder.php
new file mode 100644
index 00000000..debe69f5
--- /dev/null
+++ b/app/Models/BargainOrder.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class BargainOrder extends Model
+{
+    use HasFactory;
+}
diff --git a/app/Models/BargainOrderLog.php b/app/Models/BargainOrderLog.php
new file mode 100644
index 00000000..0682b5f5
--- /dev/null
+++ b/app/Models/BargainOrderLog.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class BargainOrderLog extends Model
+{
+    use HasFactory;
+}
diff --git a/app/Models/BargainSku.php b/app/Models/BargainSku.php
new file mode 100644
index 00000000..f1cf2a79
--- /dev/null
+++ b/app/Models/BargainSku.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class BargainSku extends Model
+{
+    use HasFactory;
+
+    protected $timestamp = false;
+}
diff --git a/database/migrations/2022_04_06_110305_create_bargain_activities_table.php b/database/migrations/2022_04_06_110305_create_bargain_activities_table.php
new file mode 100644
index 00000000..f35b38f8
--- /dev/null
+++ b/database/migrations/2022_04_06_110305_create_bargain_activities_table.php
@@ -0,0 +1,39 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class CreateBargainActivitiesTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('bargain_activities', function (Blueprint $table) {
+            $table->id();
+            $table->string('name')->comment('活动名称');
+            $table->text('description')->nullable()->comment('活动描述');
+            $table->boolean('is_enable')->nullable()->comment('是否开启');
+            $table->text('rules')->nullable()->comment('砍价规则');
+            $table->unsignedInteger('times')->default(0)->comment('有效刀，0为不限');
+            $table->unsignedInteger('expire_hours')->default(0)->comment('过期小时');
+            $table->timestamp('start_at')->nullable()->comment('开始时间');
+            $table->timestamp('end_at')->nullable()->comment('结束时间');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('bargain_activities');
+    }
+}
diff --git a/database/migrations/2022_04_06_110958_create_bargain_orders_table.php b/database/migrations/2022_04_06_110958_create_bargain_orders_table.php
new file mode 100644
index 00000000..0160114b
--- /dev/null
+++ b/database/migrations/2022_04_06_110958_create_bargain_orders_table.php
@@ -0,0 +1,37 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class CreateBargainOrdersTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('bargain_orders', function (Blueprint $table) {
+            $table->id();
+            $table->unsignedBigInteger('activity_id')->comment('参与活动ID');
+            $table->unsignedBigInteger('user_id')->comment('发起用户ID');
+            $table->unsignedBigInteger('sku_id')->comment('砍价商品');
+            $table->boolean('status')->default(false)->comment('状态:0未砍完，1已砍完');
+            $table->timestamp('expire_at')->nullable()->comment('过期时间');
+            $table->string('remark')->nullable()->comment('备注');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('bargain_orders');
+    }
+}
diff --git a/database/migrations/2022_04_06_111642_create_bargain_skus_table.php b/database/migrations/2022_04_06_111642_create_bargain_skus_table.php
new file mode 100644
index 00000000..26977b0d
--- /dev/null
+++ b/database/migrations/2022_04_06_111642_create_bargain_skus_table.php
@@ -0,0 +1,33 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class CreateBargainSkusTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('bargain_skus', function (Blueprint $table) {
+            $table->id();
+            $table->unsignedBigInteger('activity_id')->comment('活动ID');
+            $table->unsignedBigInteger('sku_id')->comment('商品ID');
+            // $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('bargain_skus');
+    }
+}
diff --git a/database/migrations/2022_04_06_112225_add_bargain_to_orders_table.php b/database/migrations/2022_04_06_112225_add_bargain_to_orders_table.php
new file mode 100644
index 00000000..227b692f
--- /dev/null
+++ b/database/migrations/2022_04_06_112225_add_bargain_to_orders_table.php
@@ -0,0 +1,35 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class AddBargainToOrdersTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('orders', function (Blueprint $table) {
+            //
+            $table->unsignedBigInteger('bargain_amount')->default(0)->comment('砍价金额');
+            $table->unsignedBigInteger('bargain_order_id')->nullable()->comment('关联砍价单ID');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('orders', function (Blueprint $table) {
+            //
+            $table->dropColumn(['bargain_amount', 'bargain_order_id']);
+        });
+    }
+}
diff --git a/database/migrations/2022_04_06_112539_create_bargain_order_logs_table.php b/database/migrations/2022_04_06_112539_create_bargain_order_logs_table.php
new file mode 100644
index 00000000..bc71a827
--- /dev/null
+++ b/database/migrations/2022_04_06_112539_create_bargain_order_logs_table.php
@@ -0,0 +1,34 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class CreateBargainOrderLogsTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('bargain_order_logs', function (Blueprint $table) {
+            $table->id();
+            $table->unsignedBigInteger('order_id')->comment('订单ID');
+            $table->unsignedBigInteger('user_id')->comment('用户ID');
+            $table->unsignedBigInteger('bargain_amount')->default(0)->comment('砍价金额');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('bargain_order_logs');
+    }
+}