Biometric identification techniques deal with the identification of individuals based on their biological or human behavioral characteristics. Biometric identification methods should be reliable, anti counterfeit, convenient and safe. As the development of a computer, biometric identification techniques will be used widely either in the martial area or in our daily life. The paper summarizes biometric identification techniques. Also it fully discussed the identification principle, character, the advantages and disadvantages of different methods. Moreover, the character integrated method was discussed to improve the false acceptance ratio of biometric identification techniques. The prospects and development of those methods are also analyzed.