打开SQL企业管理器 ，找到你要导出用户表字段信息的那个数据库 ，点击工具上的Sql查询分析器
直接copy下面的Sql语句到查询分析器中，点击F5运行
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SELECT

      (case when a.colorder=1 then d.name else '' end)表名,
      a.colorder 字段序号,
      a.name 字段名,
      (case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end) 标识,
      (case when (SELECT count(*)
      FROM sysobjects
      WHERE (name in
                (SELECT name
               FROM sysindexes
               WHERE (id = a.id) AND (indid in
                         (SELECT indid
                        FROM sysindexkeys
                        WHERE (id = a.id) AND (colid in
                                  (SELECT colid
                                 FROM syscolumns
                                 WHERE (id = a.id) AND (name = a.name))))))) AND
             (xtype = 'PK'))>0 then '√' else '' end) 主键,
      b.name 类型,
      a.length 占用字节数,
      COLUMNPROPERTY(a.id,a.name,'PRECISION') as 长度,
      isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0) as 小数位数,
      (case when a.isnullable=1 then '√'else '' end) 允许空,
      isnull(e.text,'') 默认值,
      isnull(g.[value],'') AS 字段说明   

FROM  syscolumns  a left join systypes b

on  a.xtype=b.xusertype
inner join sysobjects d

on a.id=d.id  and  d.xtype='U' and  d.name<>'dtproperties'
left join syscomments e 
on a.cdefault=e.id
left join sysproperties g
on a.id=g.id AND a.colid = g.smallid 

order by a.id,a.colorder
 
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该数据库中的用户字段信息就出来了，然后可以把结果全选，复制到Excel里面 粘贴。
微软的东西通用性就是好 ，所有的数据字段详情都导到excel里面了。