On account of the current existed problems，the key to maintaining the security of the National Education Examination can be summarized as follows：exam questions loss(expose)behavior；comprehensive examination candidates'rampant corrupt practices；tampering witll the data of candidates after the examination by illegal means；a variety of constant sudden events in examination process．The main reason for these problems is that：the opportunistic psychological impact on candidates，the influence of the social integrity environment，the lag of the examination and legal system，the intemal disorder in the examination administration department．the alienation of the exam function．