The invention discloses a drunk driving detection system, which comprises an alcohol detection module, a processing module, an identity card collection module, a face recognition module, a wireless transmission module, a power module and a releasing module. The drunk driving detection system is characterized in that the processing module is independently connected with the alcohol detection module, the identity card collection module, the wireless transmission module, the power module, the face recognition module and the releasing module. The drunk driving detection system can be installed on the exits of entertainment venues including hotels, bars and the like, people and vehicles are paired, then, an electronic eye monitors whether a vehicle under the name of a vehicle owner which conforms to a drunk-driving driving condition runs on the street or not, and a drunk driving phenomenon is actively monitored so as to nip in the bud.