The invention belongs to the technical field of automobile seat assembly, and especially relates to an RFID (Radio Frequency Identification) system applied to an automobile seat assembly-production line. The RFID system mainly comprises an RFID tag, a reader, a reader antenna, an electronic display board and data processing middleware, wherein the reader is provided with an anti-collision processing module, and the anti-collision processing modules adopts a backward paging anti-collision processing algorithm. The system adopts a special anti-collision algorithm in allusion to a problem that the production line cannot operate reliably and is long in recognition time because of communication collision between the high-frequency reader and the tag in an actual assembly and production environment of the production line, and the tag is enabled to respond to the reader more quickly through adding a guide bit in a paging instruction of the reader, so that the total communication amount and the transmission time delay are reduced, the average time required by tag authentication is reduced, the success rate of tag query is increased, and thus the running reliability and efficiency of the whole production system are improved.