diff --git a/oms_web/oms_vue/package.json b/oms_web/oms_vue/package.json
index 9b44bc24..dccf5b15 100644
--- a/oms_web/oms_vue/package.json
+++ b/oms_web/oms_vue/package.json
@@ -48,7 +48,8 @@
     "vue-cropper": "0.5.5",
     "vue-router": "3.4.9",
     "vuedraggable": "2.24.3",
-    "vuex": "3.6.0"
+    "vuex": "3.6.0",
+    "decimal.js": "10.4.2"
   },
   "devDependencies": {
     "@vue/cli-plugin-babel": "4.4.6",
diff --git a/oms_web/oms_vue/src/main.js b/oms_web/oms_vue/src/main.js
index da017509..189b9dfc 100644
--- a/oms_web/oms_vue/src/main.js
+++ b/oms_web/oms_vue/src/main.js
@@ -4,7 +4,9 @@ import Cookies from 'js-cookie'
 
 import Element from 'element-ui'
 import './assets/styles/element-variables.scss'
+import * as Calc from '@/utils/calc'
 
+Vue.prototype.$calc = Calc   // 全局挂载
 import '@/assets/styles/index.scss' // global css
 import '@/assets/styles/ruoyi.scss' // ruoyi css
 import App from './App'
diff --git a/oms_web/oms_vue/src/utils/calc.js b/oms_web/oms_vue/src/utils/calc.js
new file mode 100644
index 00000000..37c814de
--- /dev/null
+++ b/oms_web/oms_vue/src/utils/calc.js
@@ -0,0 +1,38 @@
+import Decimal from 'decimal.js'
+
+// 默认保留小数位（你可根据业务修改，比如金额一般 2 位）
+const DEFAULT_DP = 2
+
+// 内部方法：统一转换 Decimal，避免 null/undefined 报错
+function D(n) {
+  return new Decimal(n || 0)
+}
+
+/**
+ * 保留小数位 & 四舍五入
+ * @param value 数值
+ * @param dp 保留位数（默认 DEFAULT_DP）
+ */
+export function toFixed(value, dp = DEFAULT_DP) {
+  return D(value).toDecimalPlaces(dp).toNumber()
+}
+
+// 加法
+export function add(a, b, dp = DEFAULT_DP) {
+  return D(a).plus(b).toDecimalPlaces(dp).toNumber()
+}
+
+// 减法
+export function sub(a, b, dp = DEFAULT_DP) {
+  return D(a).minus(b).toDecimalPlaces(dp).toNumber()
+}
+
+// 乘法
+export function mul(a, b, dp = DEFAULT_DP) {
+  return D(a).times(b).toDecimalPlaces(dp).toNumber()
+}
+
+// 除法
+export function div(a, b, dp = DEFAULT_DP) {
+  return D(a).div(b || 1).toDecimalPlaces(dp).toNumber()
+}
diff --git a/oms_web/oms_vue/src/utils/ruoyi.js b/oms_web/oms_vue/src/utils/ruoyi.js
index ae9eadfb..d75265d8 100644
--- a/oms_web/oms_vue/src/utils/ruoyi.js
+++ b/oms_web/oms_vue/src/utils/ruoyi.js
@@ -226,9 +226,4 @@ export function getNormalPath(p) {
 export function blobValidate(data) {
   return data.type !== 'application/json'
 }
-export function preciseCurrencyRound(amount,decimalPlace) {
-  if (decimalPlace){
-    return Number(Math.round(amount + `e${decimalPlace}`) + `e-${decimalPlace}`);
-  }
-  return Number(Math.round(amount + 'e2') + 'e-2');
-}
+
diff --git a/oms_web/oms_vue/src/views/approve/order/ConfigInfo.vue b/oms_web/oms_vue/src/views/approve/order/ConfigInfo.vue
index 7a7c3db1..488e46dd 100644
--- a/oms_web/oms_vue/src/views/approve/order/ConfigInfo.vue
+++ b/oms_web/oms_vue/src/views/approve/order/ConfigInfo.vue
@@ -206,7 +206,6 @@
 </template>
 
 <script>
-import {preciseCurrencyRound} from "@/utils/ruoyi";
 
 export default {
   name: "ConfigInfo",
@@ -302,8 +301,9 @@ export default {
       if (discount === 1) {
         return product.allPrice;
       }
-      const roundedDiscountedUnitPrice = preciseCurrencyRound( product.price * discount);
-      return roundedDiscountedUnitPrice * product.quantity;
+      const roundedDiscountedUnitPrice = this.$calc.mul( product.price,discount);
+
+      return this.$calc.mul(roundedDiscountedUnitPrice , product.quantity);
     },
     calculateTotal(productList, discount) {
       if (!productList) return 0;
diff --git a/oms_web/oms_vue/src/views/project/info/ProductConfig.vue b/oms_web/oms_vue/src/views/project/info/ProductConfig.vue
index 8f9d5953..525dd174 100644
--- a/oms_web/oms_vue/src/views/project/info/ProductConfig.vue
+++ b/oms_web/oms_vue/src/views/project/info/ProductConfig.vue
@@ -254,7 +254,7 @@
 
 <script>
 import SelectProduct from '@/views/system/product/selectProduct.vue';
-import {preciseCurrencyRound} from "@/utils/ruoyi";
+
 
 export default {
   name: 'ProductConfig',
@@ -322,8 +322,8 @@ export default {
         quantity: item.quantity || 0,
         taxRate: item.taxRate || 13,
         cataloguePriceFormat: this.formatAmount(item.cataloguePrice),
-        guidanceDiscountFormat: item.guidanceDiscount ? preciseCurrencyRound(item.guidanceDiscount * 100, 2) : '',
-        discountFormat: item.discount ? preciseCurrencyRound(item.discount * 100, 2) : '',
+        guidanceDiscountFormat: item.guidanceDiscount ? this.$calc.mul(item.guidanceDiscount, 100) : '',
+        discountFormat: item.discount ? this.$calc.mul(item.discount, 100) : '',
         priceFormat: this.formatAmount(item.price),
         allPriceFormat: this.formatAmount(item.allPrice),
         catalogueAllPriceFormat: this.formatAmount(item.catalogueAllPrice)
@@ -413,9 +413,9 @@ export default {
       row.cataloguePrice = product.cataloguePrice;
       row.cataloguePriceFormat = this.formatAmount(product.cataloguePrice);
       row.guidanceDiscount = product.guidanceDiscount;
-      row.guidanceDiscountFormat = product.guidanceDiscount ? preciseCurrencyRound(product.guidanceDiscount * 100, 2) : '';
+      row.guidanceDiscountFormat = product.guidanceDiscount ? this.$calc.mul(product.guidanceDiscount, 100) : '';
       row.discount = product.guidanceDiscount || 0;
-      row.discountFormat = product.guidanceDiscount ? preciseCurrencyRound(product.guidanceDiscount * 100, 2) : '';
+      row.discountFormat = product.guidanceDiscount ? this.$calc.mul(product.guidanceDiscount, 100) : '';
 
       this.calculateRow(row);
       this.emitChange();
@@ -439,14 +439,13 @@ export default {
       if (isNaN(price)) {
         price = 0;
       }
-      row.price = preciseCurrencyRound(price, 2);
+      row.price = this.$calc.toFixed(price);
       row.priceFormat = this.formatAmount(row.price);
 
       // 如果目录单价存在且不为0，则重新计算折扣
       if (row.cataloguePrice && row.cataloguePrice > 0) {
-        const discount = row.price / row.cataloguePrice;
-        row.discount = preciseCurrencyRound(discount, 4); // 精度为4位
-        row.discountFormat = preciseCurrencyRound(discount * 100, 2); // 显示为百分比，保留2位小数
+        row.discount = this.$calc.div(row.price,row.cataloguePrice,4) // 精度为4位
+        row.discountFormat = this.$calc.mul(row.discount  ,100, 2); // 显示为百分比，保留2位小数
       } else {
         // 如果目录单价为0，则折扣也为0
         row.discount = 0;
@@ -454,9 +453,9 @@ export default {
       }
 
       // 重新计算总价和目录总价
-      row.allPrice = preciseCurrencyRound(row.price * row.quantity, 2);
+      row.allPrice = this.$calc.mul(row.price , row.quantity, 2);
       row.allPriceFormat = this.formatAmount(row.allPrice);
-      row.catalogueAllPrice = preciseCurrencyRound(row.cataloguePrice * row.quantity, 2);
+      row.catalogueAllPrice = this.$calc.mul(row.cataloguePrice ,row.quantity, 2);
       row.catalogueAllPriceFormat = this.formatAmount(row.catalogueAllPrice);
 
       this.emitChange();
@@ -466,17 +465,17 @@ export default {
         return;
       }
       // 计算单价 = 目录单价 * 折扣
-      const discount = row.discountFormat ? row.discountFormat / 100 : 0;
-      row.discount = preciseCurrencyRound(discount, 4);
-      row.price =preciseCurrencyRound(row.cataloguePrice * discount, 2);
+      const discount = row.discountFormat ? this.$calc.div(row.discountFormat , 100,4) : 0;
+      row.discount = discount;
+      row.price =this.$calc.mul(row.cataloguePrice , discount, 2);
       row.priceFormat = this.formatAmount(row.price);
 
       // 计算总价 = 单价 * 数量
-      row.allPrice = preciseCurrencyRound(row.price * row.quantity, 2);
+      row.allPrice = this.$calc.mul(row.price , row.quantity, 2);
       row.allPriceFormat = this.formatAmount(row.allPrice);
 
       // 计算目录总价 = 目录单价 * 数量
-      row.catalogueAllPrice = preciseCurrencyRound(row.cataloguePrice * row.quantity, 2);
+      row.catalogueAllPrice = this.$calc.mul(row.cataloguePrice , row.quantity, 2);
       row.catalogueAllPriceFormat = this.formatAmount(row.catalogueAllPrice);
 
       this.emitChange();
@@ -535,7 +534,7 @@ export default {
       if (isNaN(cataloguePrice)) {
         cataloguePrice = 0;
       }
-      row.cataloguePrice = preciseCurrencyRound(cataloguePrice, 2);
+      row.cataloguePrice = this.$calc.toFixed(cataloguePrice, 2);
       row.cataloguePriceFormat = this.formatAmount(row.cataloguePrice);
 
       // Recalculate based on new catalogue price
diff --git a/oms_web/oms_vue/src/views/purchaseorder/components/PurchaseOrderDetail.vue b/oms_web/oms_vue/src/views/purchaseorder/components/PurchaseOrderDetail.vue
index 94c6a128..e16bf435 100644
--- a/oms_web/oms_vue/src/views/purchaseorder/components/PurchaseOrderDetail.vue
+++ b/oms_web/oms_vue/src/views/purchaseorder/components/PurchaseOrderDetail.vue
@@ -188,7 +188,7 @@ import { listAllVendor } from "@/api/base/vendor";
 import SelectUser from "@/views/system/user/selectUser";
 import SelectProduct from "@/views/system/product/selectProduct";
 import { getDicts } from "@/api/system/dict/data";
-import {preciseCurrencyRound} from "@/utils/ruoyi";
+
 
 export default {
   name: "PurchaseOrderDetail",
@@ -271,7 +271,7 @@ export default {
   computed: {
     totalAmountWithTax() {
       const total = this.form.omsPurchaseOrderItemList?.reduce((acc, cur) => acc + (cur.amountTotal || 0), 0);
-      this.form.totalAmount=preciseCurrencyRound(total)  || 0;
+      this.form.totalAmount=this.$calc.toFixed(total)  || 0;
       return this.form.totalAmount;
     },
     totalAmountWithoutTax() {
@@ -280,10 +280,10 @@ export default {
         const taxRate = cur.taxRate || 0;
         return acc + (amount  / (1 + taxRate));
       }, 0);
-      return (preciseCurrencyRound(total)) || 0;
+      return (this.$calc.toFixed(total)) || 0;
     },
     totalTaxAmount() {
-      return (preciseCurrencyRound((this.totalAmountWithTax  - this.totalAmountWithoutTax )) ) || 0;
+      return this.$calc.sub(this.totalAmountWithTax  , this.totalAmountWithoutTax )  || 0;
     }
   },
   watch: {
@@ -392,8 +392,8 @@ export default {
     /** 计算含税小计 */
     calculateRowTotal(row) {
       if (row.quantity != null && row.price != null) {
-        row.amountTotal = preciseCurrencyRound(row.quantity * row.price);
-        row.taxTotal = row.amountTotal - preciseCurrencyRound(row.amountTotal / (1 + row.taxRate));
+        row.amountTotal = this.$calc.mul(row.quantity , row.price);
+        row.taxTotal = row.amountTotal - this.$calc.div(row.amountTotal , (1 + row.taxRate));
       } else {
         row.amountTotal = 0;
         row.taxTotal = 0;
@@ -401,9 +401,9 @@ export default {
     },
     /** 获取厂商列表 */
     getVendorList() {
-        return listAllVendor().then(res => {
-            this.vendorOptions = res.data;
-        })
+      return listAllVendor().then(res => {
+        this.vendorOptions = res.data;
+      })
     },
     /** 制造商选择变化 */
     handleVendorChange(vendorId) {
@@ -414,26 +414,26 @@ export default {
         this.form.payMethod=this.selectedVendor.payMethod;
       } else {
         this.selectedVendor = {};
-         this.form.warehouseId = null;
-         this.currentVendorCode = null;
-         this.form.payMethod = null;
+        this.form.warehouseId = null;
+        this.currentVendorCode = null;
+        this.form.payMethod = null;
       }
     },
     /** 处理采购员选择 */
     handlePurchaserSelect(user) {
 
       console.log(user)
-        this.$set(this.form, 'purchaserId', user.userId);
-        this.$set(this.form, 'purchaserName', user.userName);
-        this.$set(this.form, 'purchaserMobile', user.phonenumber);
-        this.$set(this.form, 'purchaserEmail', user.email);
-        this.purchaserSelectOpen = false;
+      this.$set(this.form, 'purchaserId', user.userId);
+      this.$set(this.form, 'purchaserName', user.userName);
+      this.$set(this.form, 'purchaserMobile', user.phonenumber);
+      this.$set(this.form, 'purchaserEmail', user.email);
+      this.purchaserSelectOpen = false;
     },
     /** 处理汇智负责人选择 */
     handleOwnerSelect(user) {
-        this.$set(this.form, 'ownerId', user.userId);
-        this.$set(this.form, 'ownerName', user.userName);
-        this.ownerSelectOpen = false;
+      this.$set(this.form, 'ownerId', user.userId);
+      this.$set(this.form, 'ownerName', user.userName);
+      this.ownerSelectOpen = false;
     },
     /** 提交按钮 */
     submitForm() {
diff --git a/oms_web/oms_vue/src/views/purchaseorder/components/PurchaseOrderDetailView.vue b/oms_web/oms_vue/src/views/purchaseorder/components/PurchaseOrderDetailView.vue
index 81ddc5e6..1616c9f0 100644
--- a/oms_web/oms_vue/src/views/purchaseorder/components/PurchaseOrderDetailView.vue
+++ b/oms_web/oms_vue/src/views/purchaseorder/components/PurchaseOrderDetailView.vue
@@ -226,7 +226,7 @@
 import {getPurchaseorder, getPurchaseOrderHistory} from "@/api/sip/purchaseorder";
 import {listAllVendor} from "@/api/base/vendor";
 import {getDicts} from "@/api/system/dict/data";
-import {preciseCurrencyRound} from "@/utils/ruoyi";
+
 
 
 export default {
@@ -277,7 +277,7 @@ export default {
   computed: {
     totalAmountWithTax() {
       const total = this.form.omsPurchaseOrderItemList?.reduce((acc, cur) => acc + (cur.amountTotal || 0), 0);
-      return preciseCurrencyRound(total) || 0;
+      return this.$calc.toFixed(total) || 0;
     },
     totalAmountWithoutTax() {
       const total = this.form.omsPurchaseOrderItemList?.reduce((acc, cur) => {
@@ -285,10 +285,10 @@ export default {
         const taxRate = cur.taxRate || 0;
         return acc + (amount / (1 + taxRate));
       }, 0);
-      return (preciseCurrencyRound(total)) || 0;
+      return (this.$calc.toFixed(total)) || 0;
     },
     totalTaxAmount() {
-      return (preciseCurrencyRound((this.totalAmountWithTax - this.totalAmountWithoutTax))) || 0;
+      return (this.$calc.sub(this.totalAmountWithTax , this.totalAmountWithoutTax)) || 0;
     }
   },
   watch: {