Pedestrian warning system for electric automobile and method

The invention provides a pedestrian warning system for an electric automobile and a method. The pedestrian warning system comprises a CAN transceiver unit, a control unit and a warning unit, wherein the CAN transceiver unit is used for acquiring work mode information of the pedestrian warning system, automobile powder mode information, automobile speed information, gear information, camera information and radar information through a CAN bus; the control unit is used for sending a control signal to the warning unit according to the information acquired by the CAN transceiver unit so as to control the warning unit to send or not to send a warning sound; and the warning unit can send or not send the warning sound according to the control signal sent by the control unit. In the pedestrian warning system, a user can freely select the work mode of the pedestrian warning system; and in an intelligent mode, the pedestrian warning system can be actively controlled to send or not send the sound through the pedestrian r