Abstract: Cochlea implant which is composed of external body speech processor and internal receiver-stimulator can provide a sense of sound to people who are deaf or deeply hearing-impaired.Development of low power speech processor for cochlear implant based on Commercial-Off-The-Shelf(COTS) is described.The low power stereo A/D CS53L21 is used to collect the speech signal,the speech signal is processed by the TMS320VC5502 with CIS algorithm,and the RFID chip MLX90121 is used to communicate with the internal receiver-stimulator via RF link.