diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpInputTagHelperService.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpInputTagHelperService.cs
index d4cc92deb5..48cf748f24 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpInputTagHelperService.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpInputTagHelperService.cs
@@ -50,6 +50,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
                 output.TagName = "div";
                 LeaveOnlyGroupAttributes(context, output);
                 output.Attributes.AddClass(isCheckbox ? "form-check" : "form-group");
+                output.Attributes.AddClass(isCheckbox ? "mb-2" : "");
                 output.Content.SetHtmlContent(output.Content.GetContent() + innerHtml);
             }
         }