An embodiment of the invention provides an engine intelligent start-stop control method and system based on vehicle and traffic information interaction; the system comprises: a vehicle traffic information receiver for receiving traffic road condition of a section where a vehicle currently locates; a start-stop control unit for starting and stopping an engine according to the traffic road information. The method and system have the advantages that an engine is intelligently controlled to start and stop through fusion of traffic light information and vehicle information and unnecessary start-stop control and start delay problems are effectively solved.