The invention discloses a virtual SIM/USIM card security protection system, at least comprising an identity recognition module, a terminal unique recognition code obtaining module, a locking module, an unlocking module, an encryption analysis module, a communication module, an optimal card number distribution module and an access network information storage module. The identity recognition module is respectively connected with the terminal unique recognition code obtaining module, the locking module, the unlocking module, the encryption analysis module and the access network information storage module; the optimal card number distribution module is respectively connected with the encryption analysis module, the communication module and the access network information storage module. According to the invention, whether a terminal matches with a virtual SIM/USIM card connected to the terminal is verified by an identity verification module; if the terminal does not match with the virtual card, communication between the terminal and the virtual card is forbidden through the locking module; if the terminal matches with the virtual card, the terminal is allowed to use the virtual card through the unlocking module; therefore the virtual card is prevented from being embezzled; and the security of the virtual card is improved.