Investigation is a basic Marxist method. It is the style of work that comrade Mao Zedong always advocated too. And it is the ,basic ability that the secretary must possess. Nowadays, new problems emerge constantly with the new situations, so making investigations seems especially important to secretaries and secretarial work. First of all, making investigations can improve the science, objectivity, pertinence and validity of secretary' s aid decision. Secondly, making investigations can optimize the result of vocational work of the secretary. ...