diff --git a/openhis-ui-vue3/src/views/inpatientDoctor/home/components/order/index.vue b/openhis-ui-vue3/src/views/inpatientDoctor/home/components/order/index.vue
index a2597ef61..6dab13c2c 100755
--- a/openhis-ui-vue3/src/views/inpatientDoctor/home/components/order/index.vue
+++ b/openhis-ui-vue3/src/views/inpatientDoctor/home/components/order/index.vue
@@ -1596,36 +1596,39 @@ function handleSaveGroup(orderGroupList) {
       patientId: patientInfo.value.patientId,
       encounterId: patientInfo.value.encounterId,
       accountId: accountId.value,
-      quantity: item.quantity,
-      methodCode: item.methodCode,
-      rateCode: item.rateCode,
-      dispensePerDuration: item.dispensePerDuration,
-      dose: item.dose,
-      doseQuantity: item.doseQuantity,
+      // 🔧 修复 Bug #403：从 mergedDetail 读取明细字段，而非直接从 item 取
+      // item.dose 等字段可能为 null，mergedDetail 已做 ?? 兜底
+      quantity: mergedDetail.quantity ?? item.quantity,
+      methodCode: mergedDetail.methodCode ?? item.methodCode,
+      rateCode: mergedDetail.rateCode ?? item.rateCode,
+      dispensePerDuration: mergedDetail.dispensePerDuration ?? item.dispensePerDuration,
+      dose: mergedDetail.dose ?? item.dose,
+      doseQuantity: mergedDetail.doseQuantity ?? item.doseQuantity,
       executeNum: 1,
-      unitCode: item.unitCode,
-      unitCode_dictText: item.unitCodeName || '',
+      unitCode: mergedDetail.unitCode ?? item.unitCode,
+      unitCode_dictText: item.unitCodeName || mergedDetail.unitCodeName || '',
       statusEnum: 1,
-      orgId: resolveOrgId(item.orderDetailInfos?.orgId || mergedDetail.orgId || patientInfo.value?.inHospitalOrgId) || '',
-      // 🔧 修复：同时保存 orgName，确保树匹配不到时仍有中文名称可显示
-      orgName: findOrgName(item.orderDetailInfos?.orgId || mergedDetail.orgId || patientInfo.value?.inHospitalOrgId) || item.orderDetailInfos?.orgName || mergedDetail.orgName || patientInfo.value?.inHospitalOrgName || '',
+      orgId: resolveOrgId(mergedDetail.orgId || patientInfo.value?.inHospitalOrgId) || '',
+      // 🔧 修复：同时存储 orgName，确保树匹配不到时仍有中文名称可显示
+      orgName: findOrgName(mergedDetail.orgId || patientInfo.value?.inHospitalOrgId) || mergedDetail.orgName || patientInfo.value?.inHospitalOrgName || '',
       dbOpType: prescriptionList.value[rowIndex.value].requestId ? '2' : '1',
       conditionId: conditionId.value,
       conditionDefinitionId: conditionDefinitionId.value,
       encounterDiagnosisId: encounterDiagnosisId.value,
-      therapyEnum: prescriptionList.value[rowIndex.value]?.therapyEnum || '1',
+      therapyEnum: prescriptionList.value[rowIndex.value]?.therapyEnum || mergedDetail.therapyEnum || '1',
     };
 
     // 计算价格和总量
-    const unitInfo = unitCodeList.value.find((k) => k.value == item.unitCode);
+    const resolvedUnitCode = mergedDetail.unitCode ?? item.unitCode;
+    const unitInfo = unitCodeList.value.find((k) => k.value == resolvedUnitCode);
     if (unitInfo && unitInfo.type == 'minUnit') {
       newRow.price = newRow.minUnitPrice;
-      newRow.totalPrice = (item.quantity * newRow.minUnitPrice).toFixed(6);
-      newRow.minUnitQuantity = item.quantity;
+      newRow.totalPrice = (newRow.quantity * newRow.minUnitPrice).toFixed(6);
+      newRow.minUnitQuantity = newRow.quantity;
     } else {
       newRow.price = newRow.unitPrice;
-      newRow.totalPrice = (item.quantity * newRow.unitPrice).toFixed(6);
-      newRow.minUnitQuantity = item.quantity * (item.orderDetailInfos?.partPercent || mergedDetail.partPercent || 1);
+      newRow.totalPrice = (newRow.quantity * newRow.unitPrice).toFixed(6);
+      newRow.minUnitQuantity = newRow.quantity * (mergedDetail.partPercent || 1);
     }
 
     newRow.contentJson = JSON.stringify(newRow);