Abstract: Objective Based on a retrospective analysis of the drunk driving cases, to explore the drunk drivers’ personnel composition, occurrence time and psychology. Methods As a result of punishment of the drunk driving by criminal law for one year from May 1st, 2011 to April 30th, 2012, 97 drunk driving cases were statistically analyzed the easy-happening time of drunk driving, the drunk drivers’ age, gender, occupational characteristics, domicile and psychological factors. Results In 97 drunk driving cases, 26-40 years old, non-local domiciled and non-professional male drivers were prone to drunk driving at night from 22：00 to 5：00. Conclusion The behavior of drunk driving is relevant to time, age, gender and occupation. The psychological characteristics of most drivers are fluky, making-life-easy, competitive and peacockish.

Key words: forensic medicine, accidents, traffic, alcohol