diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Modal/AbpModalTagHelper.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Modal/AbpModalTagHelper.cs
index 51688afceb..ece8916dc9 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Modal/AbpModalTagHelper.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Modal/AbpModalTagHelper.cs
@@ -6,6 +6,8 @@
 
         public bool? Centered { get; set; } = false;
 
+        public bool? Scrollable { get; set; } = false;
+
         public bool? Static { get; set; } = false;
 
         public AbpModalTagHelper(AbpModalTagHelperService tagHelperService)
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Modal/AbpModalTagHelperService.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Modal/AbpModalTagHelperService.cs
index 9086d8def4..aa83265e94 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Modal/AbpModalTagHelperService.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Modal/AbpModalTagHelperService.cs
@@ -1,112 +1,118 @@
-using Microsoft.AspNetCore.Html;
-using Microsoft.AspNetCore.Mvc.Rendering;
-using Microsoft.AspNetCore.Razor.TagHelpers;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Modal
-{
-    public class AbpModalTagHelperService : AbpTagHelperService<AbpModalTagHelper>
-    {
-        public async override Task ProcessAsync(TagHelperContext context, TagHelperOutput output)
-        {
-            output.TagName = null;
-
-            var childContent = await output.GetChildContentAsync();
-
-            SetContent(context, output, childContent);
-        }
-
-        protected virtual void SetContent(TagHelperContext context, TagHelperOutput output, TagHelperContent childContent)
-        {
-            var modalContent = GetModalContentElement(context, output, childContent);
-            var modalDialog = GetModalDialogElement(context, output, modalContent);
-            var modal = GetModal(context, output, modalDialog);
-
-            output.Content.SetHtmlContent(modal);
-        }
-
-        protected virtual TagBuilder GetModalContentElement(TagHelperContext context, TagHelperOutput output, TagHelperContent childContent)
-        {
-            var element = new TagBuilder("div");
-            element.AddCssClass(GetModalContentClasses());
-            element.InnerHtml.SetHtmlContent(childContent);
-            return element;
-        }
-
-        protected virtual TagBuilder GetModalDialogElement(TagHelperContext context, TagHelperOutput output, IHtmlContent innerHtml)
-        {
-            var element = new TagBuilder("div");
-            element.AddCssClass(GetModalDialogClasses());
-            element.Attributes.Add("role", "document");
-            element.InnerHtml.SetHtmlContent(innerHtml);
-            return element;
-        }
-
-        protected virtual TagBuilder GetModal(TagHelperContext context, TagHelperOutput output, IHtmlContent innerHtml)
-        {
-            var element = new TagBuilder("div");
-            element.AddCssClass(GetModalClasses());
-            element.Attributes.Add("tabindex", "-1");
-            element.Attributes.Add("role", "dialog");
-            element.Attributes.Add("aria-hidden", "true");
-
-            foreach (var attr in output.Attributes)
-            {
-                element.Attributes.Add(attr.Name, attr.Value.ToString());
-            }
-
-            SetDataAttributes(element);
-
-            element.InnerHtml.SetHtmlContent(innerHtml);
-
-            return element;
-        }
-
-        protected virtual string GetModalClasses()
-        {
-            return "modal fade";
-        }
-
-        protected virtual string GetModalDialogClasses()
-        {
-            var classNames = new StringBuilder("modal-dialog");
-
-            if (TagHelper.Centered ?? false)
-            {
-                classNames.Append(" ");
-                classNames.Append("modal-dialog-centered");
-            }
-
-            if (TagHelper.Size != AbpModalSize.Default)
-            {
-                classNames.Append(" ");
-                classNames.Append(TagHelper.Size.ToClassName());
-            }
-
-            return classNames.ToString();
-        }
-
-        protected virtual string GetModalContentClasses()
-        {
-            return "modal-content";
-        }
-
-        protected virtual string GetDataAttributes()
-        {
-            if (TagHelper.Static == true)
-            {
-                return "data-backdrop=\"static\" ";
-            }
-            return string.Empty;
-        }
-
-        protected virtual void SetDataAttributes(TagBuilder builder)
-        {
-            if (TagHelper.Static == true)
-            {
-                builder.Attributes.Add("data-backdrop", "static");
-            }
-        }
-    }
-}
+using Microsoft.AspNetCore.Html;
+using Microsoft.AspNetCore.Mvc.Rendering;
+using Microsoft.AspNetCore.Razor.TagHelpers;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Modal
+{
+    public class AbpModalTagHelperService : AbpTagHelperService<AbpModalTagHelper>
+    {
+        public async override Task ProcessAsync(TagHelperContext context, TagHelperOutput output)
+        {
+            output.TagName = null;
+
+            var childContent = await output.GetChildContentAsync();
+
+            SetContent(context, output, childContent);
+        }
+
+        protected virtual void SetContent(TagHelperContext context, TagHelperOutput output, TagHelperContent childContent)
+        {
+            var modalContent = GetModalContentElement(context, output, childContent);
+            var modalDialog = GetModalDialogElement(context, output, modalContent);
+            var modal = GetModal(context, output, modalDialog);
+
+            output.Content.SetHtmlContent(modal);
+        }
+
+        protected virtual TagBuilder GetModalContentElement(TagHelperContext context, TagHelperOutput output, TagHelperContent childContent)
+        {
+            var element = new TagBuilder("div");
+            element.AddCssClass(GetModalContentClasses());
+            element.InnerHtml.SetHtmlContent(childContent);
+            return element;
+        }
+
+        protected virtual TagBuilder GetModalDialogElement(TagHelperContext context, TagHelperOutput output, IHtmlContent innerHtml)
+        {
+            var element = new TagBuilder("div");
+            element.AddCssClass(GetModalDialogClasses());
+            element.Attributes.Add("role", "document");
+            element.InnerHtml.SetHtmlContent(innerHtml);
+            return element;
+        }
+
+        protected virtual TagBuilder GetModal(TagHelperContext context, TagHelperOutput output, IHtmlContent innerHtml)
+        {
+            var element = new TagBuilder("div");
+            element.AddCssClass(GetModalClasses());
+            element.Attributes.Add("tabindex", "-1");
+            element.Attributes.Add("role", "dialog");
+            element.Attributes.Add("aria-hidden", "true");
+
+            foreach (var attr in output.Attributes)
+            {
+                element.Attributes.Add(attr.Name, attr.Value.ToString());
+            }
+
+            SetDataAttributes(element);
+
+            element.InnerHtml.SetHtmlContent(innerHtml);
+
+            return element;
+        }
+
+        protected virtual string GetModalClasses()
+        {
+            return "modal fade";
+        }
+
+        protected virtual string GetModalDialogClasses()
+        {
+            var classNames = new StringBuilder("modal-dialog");
+
+            if (TagHelper.Centered ?? false)
+            {
+                classNames.Append(" ");
+                classNames.Append("modal-dialog-centered");
+            }
+
+            if (TagHelper.Scrollable ?? false)
+            {
+                classNames.Append(" ");
+                classNames.Append("modal-dialog-scrollable");
+            }
+
+            if (TagHelper.Size != AbpModalSize.Default)
+            {
+                classNames.Append(" ");
+                classNames.Append(TagHelper.Size.ToClassName());
+            }
+
+            return classNames.ToString();
+        }
+
+        protected virtual string GetModalContentClasses()
+        {
+            return "modal-content";
+        }
+
+        protected virtual string GetDataAttributes()
+        {
+            if (TagHelper.Static == true)
+            {
+                return "data-backdrop=\"static\" ";
+            }
+            return string.Empty;
+        }
+
+        protected virtual void SetDataAttributes(TagBuilder builder)
+        {
+            if (TagHelper.Static == true)
+            {
+                builder.Attributes.Add("data-backdrop", "static");
+            }
+        }
+    }
+}