Function getIpvalue(clientIP)'得到客户端的IP转换成长整型，返回值getIpvalue On Error Resume Next Dim strIp, array_Ip strIp=0 array_Ip = Split(clientIP,".") If UBound(array_Ip)<>3 Then getIpvalue=0 Exit Function End If For i=0 To 3 strIp=strIp+(CInt(array_Ip(i))*(256^(3-i))) Next getIpvalue=strIp If Err Then getIpvalue=0 End Function clientIP=request.ServerVariables("REMOTE_HOST") IpValue=getIpvalue(clientIP) strSql="select top 1 City from [Ipaddress] where "&IpValue&" between Ip1 and Ip2" Set RsIp=conn.execute(strSql) If RsIp.bof and RsIp.eof then UrlCity="未知" Else UrlCity=RsIp.Fields.Item("City").Value End If if instr(UrlCity,"广州")<>0 then response.Redirect("http://www.1sucai.cn") end if if instr(UrlCity,"深圳")<>0 then response.Redirect("http://img.jb51.net") end if if instr(UrlCity,"上海")<>0 then response.Redirect("http://xiazai.jb51.net") end if 所用到的IP数据库可以去网上down一个回来