diff --git a/YLErpWeb/wwwroot/Scripts/app/pricing/structure.js b/YLErpWeb/wwwroot/Scripts/app/pricing/structure.js
index 39fed9ba..ccea95ae 100644
--- a/YLErpWeb/wwwroot/Scripts/app/pricing/structure.js
+++ b/YLErpWeb/wwwroot/Scripts/app/pricing/structure.js
@@ -1416,7 +1416,7 @@ const vueTrade = function () {
                 switch (this.viewState.initFlag) {
                     case 'first':
                         this.viewState.initFlag = '';
-                        this.changeInstrumentType();
+                        this.preloadDefaultUnderlying();
                         break;
                     case 'import1':
                     case 'import2':
@@ -1446,6 +1446,15 @@ const vueTrade = function () {
                     tradeUtils.resetRisky(this.trade);
                 }
             },
+            // EQD-7049：首腿自动预载默认类型标的。固收等环境下默认类型（Stock/CommodityFutures）可能没有
+            // 已上线标的，后端必返回"标的信息缺失"——属可容忍场景，静默失败不弹窗，留待用户自选；
+            // 用户主动切换类型仍走 changeInstrumentType，查询失败正常提示
+            preloadDefaultUnderlying() {
+                if (new Date().getTime() < this.updateKey.underlying + 300) return;
+                let instType = this.trade.UnderlyingInstrumentType;
+                this.viewState.variety = tradeHelper.getEmptyVariety(instType);
+                this.updateUnderlying({ InstrumentType: instType }, false, true);
+            },
             //变更标的类型
             changeInstrumentType() {
                 if (new Date().getTime() < this.updateKey.underlying + 300) return;
@@ -1484,7 +1493,7 @@ const vueTrade = function () {
                 }
             },
             //更新标的
-            updateUnderlying(reqData, fromSelect) {
+            updateUnderlying(reqData, fromSelect, silent) {
                 let self = this;
                 // EQD-7049：新建空白页未选标的/品种/类型时，跳过必然失败的后端默认标的查询，避免报“标的信息缺失”
                 var hasQueryKey = !!(reqData.UnderlyingCode || reqData.InstrumentType || reqData.VarietyId > 0);
@@ -1494,7 +1503,10 @@ const vueTrade = function () {
                 }
                 var instTypeChanged = !!reqData.InstrumentType;
                 !fromSelect && (self.viewState.underlying = tradeHelper.getEmptyUnderlying());
-                main.post("/pricing/AjaxGetUnderlying", reqData).done(function (resp) {
+                // silent：自动预载场景失败不弹窗（alertFn 置空+抑制网络错误提示），用户主动查询仍正常提示
+                var req = main.post("/pricing/AjaxGetUnderlying", reqData, silent ? { alertFn: $.noop, suppressError: true } : undefined);
+                silent && req.fail(function (resp) { console.warn('预载默认标的失败(已忽略):', resp && resp.msg); });
+                req.done(function (resp) {
                     let trade = self.trade;
                     let um = resp.obj.underlying;
                     if (!fromSelect) {
diff --git a/YLErpWeb/wwwroot/Scripts/app/pricing/structure_dz.js b/YLErpWeb/wwwroot/Scripts/app/pricing/structure_dz.js
index d0712e3c..6fdc2192 100644
--- a/YLErpWeb/wwwroot/Scripts/app/pricing/structure_dz.js
+++ b/YLErpWeb/wwwroot/Scripts/app/pricing/structure_dz.js
@@ -1025,7 +1025,7 @@ const vueTrade = function () {
                 switch (this.viewState.initFlag) {
                     case 'first':
                         this.viewState.initFlag = '';
-                        this.changeInstrumentType();
+                        this.preloadDefaultUnderlying();
                         break;
                     case 'import1':
                     case 'import2':
@@ -1059,6 +1059,15 @@ const vueTrade = function () {
                     tradeUtils.resetCashFlow(this.trade);
                 }
             },
+            // EQD-7049：首腿自动预载默认类型标的。固收等环境下默认类型（Stock/CommodityFutures）可能没有
+            // 已上线标的，后端必返回"标的信息缺失"——属可容忍场景，静默失败不弹窗，留待用户自选；
+            // 用户主动切换类型仍走 changeInstrumentType，查询失败正常提示
+            preloadDefaultUnderlying() {
+                if (new Date().getTime() < this.updateKey.underlying + 300) return;
+                let instType = this.trade.UnderlyingInstrumentType;
+                this.viewState.variety = tradeHelper.getEmptyVariety(instType);
+                this.updateUnderlying({ InstrumentType: instType }, false, true);
+            },
             //变更标的类型
             changeInstrumentType() {
                 if (new Date().getTime() < this.updateKey.underlying + 300) return;
@@ -1099,7 +1108,7 @@ const vueTrade = function () {
                 }
             },
             //更新标的
-            updateUnderlying(reqData, fromSelect) {
+            updateUnderlying(reqData, fromSelect, silent) {
                 let self = this;
                 // EQD-7049：新建空白页未选标的/品种/类型时，跳过必然失败的后端默认标的查询，避免报“标的信息缺失”
                 var hasQueryKey = !!(reqData.UnderlyingCode || reqData.InstrumentType || reqData.VarietyId > 0);
@@ -1109,7 +1118,10 @@ const vueTrade = function () {
                 }
                 var instTypeChanged = !!reqData.InstrumentType;
                 !fromSelect && (self.viewState.underlying = tradeHelper.getEmptyUnderlying());
-                main.post("/pricing/AjaxGetUnderlying", reqData).done(function (resp) {
+                // silent：自动预载场景失败不弹窗（alertFn 置空+抑制网络错误提示），用户主动查询仍正常提示
+                var req = main.post("/pricing/AjaxGetUnderlying", reqData, silent ? { alertFn: $.noop, suppressError: true } : undefined);
+                silent && req.fail(function (resp) { console.warn('预载默认标的失败(已忽略):', resp && resp.msg); });
+                req.done(function (resp) {
                     let trade = self.trade;
                     let um = resp.obj.underlying;
                     if (!fromSelect) {