diff --git a/Masuit.Tools/Html/HtmlHelper.cs b/Masuit.Tools/Html/HtmlHelper.cs
index 6242fee..fe35ca3 100644
--- a/Masuit.Tools/Html/HtmlHelper.cs
+++ b/Masuit.Tools/Html/HtmlHelper.cs
@@ -302,37 +302,37 @@ namespace Masuit.Tools.Html
         ///<summary>   
         ///3.1清除HTML标记   
         ///</summary>   
-        ///<param name="Htmlstring">包括HTML的源码</param>   
+        ///<param name="htmlstring">包括HTML的源码</param>   
         ///<returns>已经去除后的文字</returns>   
-        public static string RemoveHtml(this string Htmlstring)
+        public static string RemoveHtml(this string htmlstring)
         {
             //删除脚本   
-            Htmlstring = Regex.Replace(Htmlstring, @"<script[^>]*?>.*?</script>", "", RegexOptions.IgnoreCase);
+            htmlstring = Regex.Replace(htmlstring, @"<script[^>]*?>.*?</script>", "", RegexOptions.IgnoreCase);
 
             //删除HTML   
             Regex regex = new Regex("<.+?>", RegexOptions.IgnoreCase);
-            Htmlstring = regex.Replace(Htmlstring, "");
-            Htmlstring = Regex.Replace(Htmlstring, @"<(.[^>]*)>", "", RegexOptions.IgnoreCase);
-            Htmlstring = Regex.Replace(Htmlstring, @"([\r\n])[\s]+", "", RegexOptions.IgnoreCase);
-            Htmlstring = Regex.Replace(Htmlstring, @"-->", "", RegexOptions.IgnoreCase);
-            Htmlstring = Regex.Replace(Htmlstring, @"<!--.*", "", RegexOptions.IgnoreCase);
+            htmlstring = regex.Replace(htmlstring, "");
+            htmlstring = Regex.Replace(htmlstring, @"<(.[^>]*)>", "", RegexOptions.IgnoreCase);
+            htmlstring = Regex.Replace(htmlstring, @"([\r\n])[\s]+", "", RegexOptions.IgnoreCase);
+            htmlstring = Regex.Replace(htmlstring, @"-->", "", RegexOptions.IgnoreCase);
+            htmlstring = Regex.Replace(htmlstring, @"<!--.*", "", RegexOptions.IgnoreCase);
 
-            Htmlstring = Regex.Replace(Htmlstring, @"&(quot|#34);", "\"", RegexOptions.IgnoreCase);
-            Htmlstring = Regex.Replace(Htmlstring, @"&(amp|#38);", "&", RegexOptions.IgnoreCase);
-            Htmlstring = Regex.Replace(Htmlstring, @"&(lt|#60);", "<", RegexOptions.IgnoreCase);
-            Htmlstring = Regex.Replace(Htmlstring, @"&(gt|#62);", ">", RegexOptions.IgnoreCase);
-            Htmlstring = Regex.Replace(Htmlstring, @"&(nbsp|#160);", "   ", RegexOptions.IgnoreCase);
-            Htmlstring = Regex.Replace(Htmlstring, @"&(iexcl|#161);", "\xa1", RegexOptions.IgnoreCase);
-            Htmlstring = Regex.Replace(Htmlstring, @"&(cent|#162);", "\xa2", RegexOptions.IgnoreCase);
-            Htmlstring = Regex.Replace(Htmlstring, @"&(pound|#163);", "\xa3", RegexOptions.IgnoreCase);
-            Htmlstring = Regex.Replace(Htmlstring, @"&(copy|#169);", "\xa9", RegexOptions.IgnoreCase);
-            Htmlstring = Regex.Replace(Htmlstring, @"&#(\d+);", "", RegexOptions.IgnoreCase);
+            htmlstring = Regex.Replace(htmlstring, @"&(quot|#34);", "\"", RegexOptions.IgnoreCase);
+            htmlstring = Regex.Replace(htmlstring, @"&(amp|#38);", "&", RegexOptions.IgnoreCase);
+            htmlstring = Regex.Replace(htmlstring, @"&(lt|#60);", "<", RegexOptions.IgnoreCase);
+            htmlstring = Regex.Replace(htmlstring, @"&(gt|#62);", ">", RegexOptions.IgnoreCase);
+            htmlstring = Regex.Replace(htmlstring, @"&(nbsp|#160);", "   ", RegexOptions.IgnoreCase);
+            htmlstring = Regex.Replace(htmlstring, @"&(iexcl|#161);", "\xa1", RegexOptions.IgnoreCase);
+            htmlstring = Regex.Replace(htmlstring, @"&(cent|#162);", "\xa2", RegexOptions.IgnoreCase);
+            htmlstring = Regex.Replace(htmlstring, @"&(pound|#163);", "\xa3", RegexOptions.IgnoreCase);
+            htmlstring = Regex.Replace(htmlstring, @"&(copy|#169);", "\xa9", RegexOptions.IgnoreCase);
+            htmlstring = Regex.Replace(htmlstring, @"&#(\d+);", "", RegexOptions.IgnoreCase);
 
-            Htmlstring.Replace("<", "");
-            Htmlstring.Replace(">", "");
-            Htmlstring.Replace("\r\n", "");
+            htmlstring.Replace("<", "");
+            htmlstring.Replace(">", "");
+            htmlstring.Replace("\r\n", "");
 
-            return Htmlstring;
+            return htmlstring;
         }
 
         #endregion
diff --git a/Masuit.Tools/Net/WebExtension.cs b/Masuit.Tools/Net/WebExtension.cs
index 942bd5f..ae36047 100644
--- a/Masuit.Tools/Net/WebExtension.cs
+++ b/Masuit.Tools/Net/WebExtension.cs
@@ -379,23 +379,27 @@ namespace Masuit.Tools.Net
         /// <returns></returns>
         public static string GetISP(this string ip)
         {
-            using (var client = new HttpClient { BaseAddress = new Uri("http://ip.taobao.com") })
+            if (ip.MatchInetAddress())
             {
-                try
+                using (var client = new HttpClient { BaseAddress = new Uri("http://ip.taobao.com") })
                 {
-                    var result = client.GetStringAsync($"/service/getIpInfo.php?ip={ip}").Result;
-                    TaobaoIP taobaoIp = JsonConvert.DeserializeObject<TaobaoIP>(result);
-                    if (taobaoIp.Code == 0)
+                    try
                     {
-                        return taobaoIp.IpData.Isp;
+                        var result = client.GetStringAsync($"/service/getIpInfo.php?ip={ip}").Result;
+                        TaobaoIP taobaoIp = JsonConvert.DeserializeObject<TaobaoIP>(result);
+                        if (taobaoIp.Code == 0)
+                        {
+                            return taobaoIp.IpData.Isp;
+                        }
+                    }
+                    catch (Exception e)
+                    {
+
                     }
                 }
-                catch (Exception e)
-                {
-                    LogManager.Error(e);
-                }
+                return $"未能找到{ip}的ISP信息";
             }
-            return $"未能找到{ip}的ISP信息";
+            return $"{ip}不是一个合法的IP";
         }
 
         #endregion