diff --git a/sql/migration/2026-03-20-lsfx-mock-random-hit-rule-purchase-baseline.sql b/sql/migration/2026-03-20-lsfx-mock-random-hit-rule-purchase-baseline.sql
new file mode 100644
index 00000000..eda85ce8
--- /dev/null
+++ b/sql/migration/2026-03-20-lsfx-mock-random-hit-rule-purchase-baseline.sql
@@ -0,0 +1,78 @@
+DELETE FROM ccdi_purchase_transaction
+WHERE purchase_id = 'LSFXMOCKPUR001';
+
+INSERT INTO ccdi_purchase_transaction (
+  purchase_id,
+  purchase_category,
+  project_name,
+  subject_name,
+  subject_desc,
+  purchase_qty,
+  budget_amount,
+  bid_amount,
+  actual_amount,
+  contract_amount,
+  settlement_amount,
+  purchase_method,
+  supplier_name,
+  contact_person,
+  contact_phone,
+  supplier_uscc,
+  supplier_bank_account,
+  apply_date,
+  plan_approve_date,
+  announce_date,
+  bid_open_date,
+  contract_sign_date,
+  expected_delivery_date,
+  actual_delivery_date,
+  acceptance_date,
+  settlement_date,
+  applicant_id,
+  applicant_name,
+  apply_department,
+  purchase_leader_id,
+  purchase_leader_name,
+  purchase_department,
+  created_by,
+  updated_by
+)
+SELECT
+  'LSFXMOCKPUR001',
+  '设备采购',
+  'LSFX Mock 联调',
+  '反洗钱终端设备采购',
+  '用于命中 LARGE_PURCHASE_TRANSACTION 真实规则',
+  1,
+  188000.00,
+  186000.00,
+  186000.00,
+  186000.00,
+  186000.00,
+  '竞争性谈判',
+  '兰溪市联调供应链有限公司',
+  '联调联系人',
+  '13800000000',
+  '91330781MOCKPUR001',
+  '6222000000001234',
+  CURRENT_DATE,
+  CURRENT_DATE,
+  CURRENT_DATE,
+  CURRENT_DATE,
+  CURRENT_DATE,
+  CURRENT_DATE,
+  CURRENT_DATE,
+  CURRENT_DATE,
+  CURRENT_DATE,
+  CAST(s.staff_id AS CHAR),
+  s.name,
+  '纪检初核部',
+  NULL,
+  NULL,
+  NULL,
+  'admin',
+  'admin'
+FROM ccdi_base_staff s
+WHERE COALESCE(TRIM(CAST(s.staff_id AS CHAR)), '') <> ''
+  AND COALESCE(TRIM(s.name), '') <> ''
+LIMIT 1;