The present invention discloses a home gateway access device type identifying system and a method, relating to the field of home gateway identification. The device type chain table of the system is used for recording the type statistics value of the access device corresponding to a source MAC, wherein the type statistics value comprises a source MAC, a CNT field and a TYPE_CNT array field. The data packet analysis sub module of the system is used for analyzing the data packet forwarded by access device and determining the type of the access device. The detection result output sub module of the system is used for outputting the source MAC address of the access device corresponding to each node in the device type chain table, each element value in the TYPE_CNT array corresponding to the source MAC address and the type of the access device determined by the data packet analysis sub module. The detection result clearing sub module of the system is used for clearing the type statistics value in the device type chain table. According to the system and the method, the type of the access device of the home gateway can be accurately identified, and the related interactive application scene can be enriched.