diff --git a/sql/ccdi_purchase_transaction.sql b/sql/ccdi_purchase_transaction.sql
new file mode 100644
index 0000000..d0a097a
--- /dev/null
+++ b/sql/ccdi_purchase_transaction.sql
@@ -0,0 +1,44 @@
+-- 员工采购交易信息表
+CREATE TABLE `ccdi_purchase_transaction` (
+  `purchase_id` VARCHAR(32) NOT NULL COMMENT '采购事项ID',
+  `purchase_category` VARCHAR(50) NOT NULL COMMENT '采购类别',
+  `project_name` VARCHAR(200) DEFAULT NULL COMMENT '项目名称',
+  `subject_name` VARCHAR(200) NOT NULL COMMENT '标的物名称',
+  `subject_desc` TEXT COMMENT '标的物描述',
+  `purchase_qty` DECIMAL(12,4) NOT NULL DEFAULT 1 COMMENT '采购数量',
+  `budget_amount` DECIMAL(18,2) NOT NULL COMMENT '预算金额',
+  `bid_amount` DECIMAL(18,2) DEFAULT NULL COMMENT '中标金额',
+  `actual_amount` DECIMAL(18,2) DEFAULT NULL COMMENT '实际采购金额',
+  `contract_amount` DECIMAL(18,2) DEFAULT NULL COMMENT '合同金额',
+  `settlement_amount` DECIMAL(18,2) DEFAULT NULL COMMENT '结算金额',
+  `purchase_method` VARCHAR(50) NOT NULL COMMENT '采购方式',
+  `supplier_name` VARCHAR(200) DEFAULT NULL COMMENT '中标供应商名称',
+  `contact_person` VARCHAR(50) DEFAULT NULL COMMENT '供应商联系人',
+  `contact_phone` VARCHAR(20) DEFAULT NULL COMMENT '供应商联系电话',
+  `supplier_uscc` VARCHAR(18) DEFAULT NULL COMMENT '供应商统一信用代码',
+  `supplier_bank_account` VARCHAR(50) DEFAULT NULL COMMENT '供应商银行账户',
+  `apply_date` DATE NOT NULL COMMENT '采购申请日期',
+  `plan_approve_date` DATE DEFAULT NULL COMMENT '采购计划批准日期',
+  `announce_date` DATE DEFAULT NULL COMMENT '采购公告发布日期',
+  `bid_open_date` DATE DEFAULT NULL COMMENT '开标日期',
+  `contract_sign_date` DATE DEFAULT NULL COMMENT '合同签订日期',
+  `expected_delivery_date` DATE DEFAULT NULL COMMENT '预计交货日期',
+  `actual_delivery_date` DATE DEFAULT NULL COMMENT '实际交货日期',
+  `acceptance_date` DATE DEFAULT NULL COMMENT '验收日期',
+  `settlement_date` DATE DEFAULT NULL COMMENT '结算日期',
+  `applicant_id` VARCHAR(7) NOT NULL COMMENT '申请人工号',
+  `applicant_name` VARCHAR(50) NOT NULL COMMENT '申请人姓名',
+  `apply_department` VARCHAR(100) NOT NULL COMMENT '申请部门',
+  `purchase_leader_id` VARCHAR(7) DEFAULT NULL COMMENT '采购负责人工号',
+  `purchase_leader_name` VARCHAR(50) DEFAULT NULL COMMENT '采购负责人姓名',
+  `purchase_department` VARCHAR(100) DEFAULT NULL COMMENT '采购部门',
+  `create_time` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+  `update_time` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
+  `created_by` VARCHAR(50) NOT NULL COMMENT '创建人',
+  `updated_by` VARCHAR(50) DEFAULT NULL COMMENT '更新人',
+  PRIMARY KEY (`purchase_id`),
+  KEY `idx_applicant_id` (`applicant_id`),
+  KEY `idx_apply_date` (`apply_date`),
+  KEY `idx_supplier_uscc` (`supplier_uscc`),
+  KEY `idx_category_method` (`purchase_category`, `purchase_method`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='员工采购交易信息表';