The invention relates to a vehicle returning system and method under the abnormity state for automatically leasing a vehicle. The problems in the prior art are solved that vehicle returning abnormityof a vehicle leasing system needs to be solved artificially, the vehicle returning time is long, the efficiency is low, and inconvenience is brought to a user. The vehicle returning system comprises auser side, a server side, a vehicle-mounted side which is installed on the vehicle and several charging piles for leasing buffering, and the user side, a charging pile communication unit and a vehicle-mounted side communication unit are connected with a server side communication unit separately. The vehicle returning method comprises the steps that the vehicle-mounted side detects whether the vehicle can be normally returned or not; when it is detected that vehicle returning is abnormal, the user judges whether to execute the abnormity vehicle returning step or not; after executing the abnormity vehicle returning step, the server side analyzes the state of the returned vehicle and the state of the charging pile, and the abnormity vehicle returning operation is conducted according to the state of the vehicle and the state of the charging pile. The vehicle returning system and method under the abnormity state have the advantages that vehicle returning under the abnormity state can be conducted, the problem that the user cannot return the vehicle when vehicle returning is abnormal is solved, vehicle returning is more convenient, the working efficiency is higher, and the time is saved.