With the rapid development of information technology and network technology, information security shows unprecedented importance. Biometric identification technology is widely used because of its unique stability, uniqueness and convenience. As a new biometric technology, palmprint recognition has been widely concerned by researchers at home and abroad because of its advantages of simple sampling, rich image information, high user acceptance, less forgery and less noise interference. However, due to the late start of palmprint recognition technology, it is still in the stage of learning and learning from other biometric technologies.