diff --git a/YLErpWeb/Controllers/underlying_managerController.cs b/YLErpWeb/Controllers/underlying_managerController.cs
index 60dda498..69ba8b66 100644
--- a/YLErpWeb/Controllers/underlying_managerController.cs
+++ b/YLErpWeb/Controllers/underlying_managerController.cs
@@ -473,7 +473,14 @@ namespace YLErp.Web.Controllers
             {
                 return JsonError("资产类型 必须填写");
             }
-      
+
+            // 重点功能：基金及基金专户的基金管理人必须填写，后端校验避免绕过页面校验。
+            model.InvestAdvisorName = model.InvestAdvisorName?.Trim();
+            if (model.UnderlyingInstrumentType == ConsGlobal.InstrumentType.Fund && string.IsNullOrEmpty(model.InvestAdvisorName))
+            {
+                return JsonError("基金管理人 必须填写");
+            }
+
             model.EtfSubType = model.EtfSubType?.Trim();
             if (model.UnderlyingInstrumentType == ConsGlobal.InstrumentType.Fund && string.IsNullOrEmpty(model.EtfSubType))
             {
diff --git a/YLErpWeb/Views/underlying_manager/underlying_managerEdit.cshtml b/YLErpWeb/Views/underlying_manager/underlying_managerEdit.cshtml
index 67e3501d..44bce52a 100644
--- a/YLErpWeb/Views/underlying_manager/underlying_managerEdit.cshtml
+++ b/YLErpWeb/Views/underlying_manager/underlying_managerEdit.cshtml
@@ -327,10 +327,10 @@
             <input id='ValueAddedTax' class='text-box' type='number' value='@(underlying.ValueAddedTax)' name='ValueAddedTax' />
         </div>
 
-        @* 仅基金及基金专户维护基金管理人 *@
+        @* 重点功能：仅基金及基金专户维护基金管理人，且该字段必填 *@
         <div class='form-group col-6 Fund'>
             <label class='formlabel'>基金管理人</label>
-            <input id='InvestAdvisorName' class='text-box' type='text' value='@(underlying.InvestAdvisorName)' name='InvestAdvisorName' maxlength='100' />
+            <input id='InvestAdvisorName' class='text-box' type='text' value='@(underlying.InvestAdvisorName)' name='InvestAdvisorName' maxlength='100' /><span style='color:red'>*</span>
         </div>
 
         @* 重点功能：ETF 子类由系统字典维护，使用 Fund 类控制显隐，并固定放在表单最后 *@
diff --git a/YLErpWeb/wwwroot/Scripts/app/underlying/underlyingedit.js b/YLErpWeb/wwwroot/Scripts/app/underlying/underlyingedit.js
index a5a2724d..dd80db28 100644
--- a/YLErpWeb/wwwroot/Scripts/app/underlying/underlyingedit.js
+++ b/YLErpWeb/wwwroot/Scripts/app/underlying/underlyingedit.js
@@ -135,6 +135,12 @@ function saveData() {
         return main.alert("资产品种类型 必须填写!");
     }
 
+    // 重点功能：基金及基金专户必须填写基金管理人，空格内容也视为未填写。
+    if (data.UnderlyingInstrumentType === "Fund" &&
+        (!data.InvestAdvisorName || !data.InvestAdvisorName.trim())) {
+        return main.alert("基金管理人 必须填写!");
+    }
+
     // 重点功能：ETF 子类只对基金及基金专户显示并必填，先在前端阻止无效提交。
     if (data.UnderlyingInstrumentType === "Fund" && !data.EtfSubType) {
         return main.alert("ETF 子类 必须填写!");