Communication authentication method of local side, local side, communication terminal and communication authentication system

The invention provides a communication authentication method of a local side, which comprises the following steps that: the local side receives a target biological recognition information comparison value from a communication terminal, compares the target biological recognition information comparison value with a reference biological recognition information comparison value, and judges whether communication connection is established or not. According to the invention, by comparing the target biological recognition information contrast value with the reference biological recognition informationcontrast value, when the target biometric identification information contrast value is the same as the reference biometric identification information contrast value, the communication connection canbe established; even if the reference biometric identification information contrast value is copied, the target biometric identification information contrast value which is the same as the reference biometric identification in