SELECT*FROM sys.sysprocesses where spid> and blocked> --可以查看阻塞 

  SELECT SPID=p.spid, DBName =convert(CHAR(),d.name),  ProgramName =program_name, LoginName =convert(CHAR(),l.name), HostName =convert(CHAR(),hostname), Status= p.status, BlockedBy = p.blocked,LoginTime = login_time, QUERY =CAST(TEXT AS VARCHAR(MAX))

   FROM MASTER.dbo.sysprocesses p

    INNER JOIN MASTER.dbo.sysdatabases d  ON p.dbid= d.dbid

     INNER JOIN MASTER.dbo.syslogins l  ON p.sid= l.sid

      CROSS APPLY sys.dm_exec_sql_text(sql_handle) WHERE  p.blocked =

      AND EXISTS(SELECT    FROM MASTER..sysprocesses p1  WHERE  p1.blocked = p.spid)  --可以查看阻塞的具体语句