The invention provides a lane recognition system and a lane recognition method, and belongs to the field of vehicles. The lane recognition system comprises a streaming media wing mirror system for collecting image data at the left rear and the right rear of a vehicle and directly behind the vehicle in real time, an image processing module for receiving and processing the image data collected by the streaming media wing mirror system to obtain lane marking information at the left rear and the right rear of the vehicle and lane marking information directly behind the vehicle, a data fusion module for performing data fusion based on the lane marking information and for calculating a lane marking recognition result of the streaming media wing mirror system, a control module for calculating a control strategy based on the lane marking recognition result, and an executive mechanism for executing a corresponding action based on the control strategy. The invention also provides the corresponding lane recognition method. The lane recognition system and the lane recognition method provided by the invention utilize the streaming media wing mirror system to detect the image data behind the vehicle in real time, so as to avoid interruption and to effectively improve the detection rate of the lane recognition system.