A strong academic atmosphere is of great significance for cultivating postgraduate"s innovation ability and improving the academic level of postgraduates. This paper expounds the present situation of postgraduate academic atmosphere and the effect of academic atmosphere on cultivating of innovation ability. The influence on the academic atmosphere is analyzed from the aspects of the tutor, the university management institution and the postgraduates. Countermeasures for building a good academic atmosphere are put forward to provide reference for cultivating postgraduates" innovation ability.