The invention discloses a security protection performance evaluation method applicable to a power wireless private network terminal. The security protection performance evaluation method applicable to the power wireless private network terminal comprises the steps of building a base station security performance evaluation system, including a terminal, multiple base stations, a switch, a secure encryption gateway, a core network, a network management server, a network management client and a secure access platform; then performing a maliciously stolen USIM card access test, performing illegally replicated USIM card access test, performing a test on access of an illegal USIM card through a social worker meaning; performing a test on access of an illegal terminal through a legal USIM card and a communication module; and performing a test on access of an illegal terminal through a legal service terminal. The security protection performance evaluation method applicable to the power wireless private network terminal enhances the control capability of the security protection of the power wireless private network terminal and protects the information security of the industrial control service of the electric grid powerfully.