Aimed at the academic misconducts highlighted gradually in the national postgraduate students' education in recent years, questionnaire paper was taken in China University of Mining and Technology (CUMT) for the academic misconducts existed in the scholarship assessment. Two types of contents were designed, intentional and unintentional academic dishonesty. By analyzing the survey data of CUMT and other universities, the formation mechanism of postgraduate academic misconducts was explored. The results indicated that negative information temptations in the society, loopholes in the school management, irresponsibility of some teachers and the quick success thought of some students were the four main factors. Consequently, the evasion methods were provided on education and management of postgraduate: strengthening the construction of social credit system, establishing a standardized graduate student academic and academic evaluation mechanism, optimizing the graduate supervisor team and educating the postgraduate overall development. The achievements can provide inference to the postgraduate education in other universities or high schools.