diff --git a/web-admin/scripts/check-mp-pl-plan-card.mjs b/web-admin/scripts/check-mp-pl-plan-card.mjs
new file mode 100644
index 000000000..0c82ee20f
--- /dev/null
+++ b/web-admin/scripts/check-mp-pl-plan-card.mjs
@@ -0,0 +1,32 @@
+/**
+ * Mirrors formatPartyLine in src/utils/mp-pl-plan-card.ts — keep in sync.
+ * Usage: node web-admin/scripts/check-mp-pl-plan-card.mjs
+ */
+
+function formatPartyLine(supplier, buyer) {
+  const s = (supplier || '').trim() || '—'
+  const b = (buyer || '').trim() || '—'
+  return `${s} → ${b}`
+}
+
+function assert(cond, msg) {
+  if (!cond) {
+    console.error(msg)
+    process.exit(1)
+  }
+}
+
+assert(formatPartyLine('安庆仓', '合肥某化') === '安庆仓 → 合肥某化', 'party')
+assert(formatPartyLine('', null) === '— → —', 'empty')
+assert(formatPartyLine('  ', undefined) === '— → —', 'whitespace')
+
+// buildPlanCard supplier/buyer/partyLine defaults (mirrors TS || '—' + formatPartyLine)
+function resolveBuyer(plan) {
+  return plan.customerName || plan.destinationName || '—'
+}
+assert(resolveBuyer({ customerName: 'A' }) === 'A', 'buyer customer')
+assert(resolveBuyer({ destinationName: 'B' }) === 'B', 'buyer destination')
+assert(resolveBuyer({}) === '—', 'buyer empty')
+assert(formatPartyLine(undefined, undefined) === '— → —', 'partyLine empty')
+
+console.log('check-mp-pl-plan-card: ok')
diff --git a/web-admin/src/utils/mp-pl-plan-card.ts b/web-admin/src/utils/mp-pl-plan-card.ts
index e33ed3086..519ddc88b 100644
--- a/web-admin/src/utils/mp-pl-plan-card.ts
+++ b/web-admin/src/utils/mp-pl-plan-card.ts
@@ -6,6 +6,12 @@ import {
   getPlPlanTypeLabel
 } from '@/utils/pl-display'
 
+export function formatPartyLine(supplier?: string | null, buyer?: string | null) {
+  const s = (supplier || '').trim() || '—'
+  const b = (buyer || '').trim() || '—'
+  return `${s} → ${b}`
+}
+
 function productSummary(plan: Plan): string {
   const extra = (plan as Plan & { productSummary?: string }).productSummary
   if (extra) return extra
@@ -20,6 +26,8 @@ function productSummary(plan: Plan): string {
 }
 
 export function buildPlanCard(plan: Plan) {
+  const supplier = plan.supplierName || '—'
+  const buyer = plan.customerName || plan.destinationName || '—'
   return {
     id: plan.id,
     planNo: plan.planNo || '—',
@@ -29,6 +37,10 @@ export function buildPlanCard(plan: Plan) {
     statusTagType: getPlPlanFollowStatusTagType(plan.followStatus),
     plate: formatPlVehiclePlateDisplay(plan.licensePlate, plan.trailerNo) || '—',
     people: plan.personnelSummary || '—',
-    product: productSummary(plan)
+    product: productSummary(plan),
+    supplier,
+    buyer,
+    partyLine: formatPartyLine(plan.supplierName, plan.customerName || plan.destinationName),
+    follower: plan.followUserName || '—'
   }
 }