Postgraduate students play an important role in academic misconduct and need to establish effective governance mechanisms in some important links of their academic misconduct. Based on the questionnaire on academic misconduct of master graduate student, this paper made a game analysis on the postgraduate academic misconduct from Curriculum Paper, Published Paper and Master Dissertation. So this paper set up a governance mechanism and put forward the corresponding control measures for expected Nash Equilibrium by changing the Payoff Matrix of the postgraduate academic misconduct.