<!--#include file="conn.asp"-->
<%

dim passpost,numpost,num,pass


passpost=request.form("password")
numpost=request.form("number")
set loginfo=server.createobject("adodb.recordset")
passinfo="select * from userinfo where number='"&numpost&"'"
loginfo.open passinfo,conn,1,3


if loginfo.eof and loginfo.bof then
response.write "学号输入有误或数据库中没有你的记录，请<a href=vbscript:history.back()>返回</a>"
end if


if passpost<>loginfo("password") then
response.write "您输入的密码有误，请<a href=vbscript:history.back()>返回</a>重新输入"
else
response.cookies("number")=numpost
response.cookies("password")=passpost
response.redirect("statistics.asp")
end if

%>

楼主的代码绝对没有错,逻辑顺序也正常.

想不到哪里出问题.反正绝对不是这里错了