diff --git a/Frm_Main.cs b/Frm_Main.cs
index ee2e865..b1cbf44 100644
--- a/Frm_Main.cs
+++ b/Frm_Main.cs
@@ -6,6 +6,7 @@ using System.Drawing;
 using System.Text;
 using System.Windows.Forms;
 using AliKeywordSearch;
+using System.Web;
 
 namespace EnAliKeywordSearch
 {
@@ -46,9 +47,10 @@ namespace EnAliKeywordSearch
                             this.ResultView.Rows[index].Cells["排名"].Value = "正在查询第" + i + "页...";
                             Application.DoEvents();
                             if (enAli.Checked == true)
-                                url = String.Format("http://www.alibaba.com/products/F0/{0}/{1}.html", key, i);
+                                url = String.Format("http://www.alibaba.com/products/F0/{0}/{1}.html", HttpUtility.UrlEncode(key), i);
                             else
-                                url = String.Format("http://s.1688.com/selloffer/offer_search.htm?keywords={0}&beginPage={1}", key, i);
+                                url = String.Format("http://s.1688.com/selloffer/offer_search.htm?keywords={0}&beginPage={1}", HttpUtility.UrlEncode(key), i);
+
                             string htmldoc = httpHelper.Get(url);
                             if (string.IsNullOrEmpty(htmldoc))
                             {
@@ -57,7 +59,7 @@ namespace EnAliKeywordSearch
                                 maybe = true;
                                 continue;
                             }
-                            if (htmldoc.Contains(cpy))
+                            if (htmldoc.Contains(HttpUtility.HtmlEncode(cpy)))
                             {
                                 pageinfo = "第" + i + "页";
                                 break;