Abstract: Treating the design and realization of Lighten the Agreement of Bidirectional Identiifcation on RFID as our study destination, we use the ECC ALG machining as the basement to start this research. The study is developed to solve some important questions which still exist in this field, such as filling the blank space in ALG on RFID, working out the dififculty of the change of the ownership and that the present agreement hasn’t been tested. At present, we have got success of logic project, original code’s development, debugging the hardware, redacting the software and testing the realibility, of which all can be put into practice directly. The positive result is based on current agreement to RFID safety and has made the impower visit, the bidirectional attestation and the mark’s anonymity realized, which can effectively protect the bidirectional safety of the tag and database. Through our serious study and analysis, we believe we have made the whole process reliable. In short, this product can satisfy the safety need of the RFID system.