Abstract: It is an important step in teaching for universities and colleges to decrease and put an end to cheating in examination by college Students. According to the classical game model ——prisoner s dilemma, this paper tries to establish a game model between students, expound the internal causes of their cheating behavior, and propose some counter measures. Through the further analysis of the static game of complete information between invigilating teachers and students, the paper offers some measures to prevent students from cheating in exam from the angle of external cause.

Key words: cheatinginexamination, prisonersdilemma, invigilation, mixedtacticscountermeasure