The invention discloses a power transformation instrument transformer group with a protection function. The power transformation instrument transformer group comprises a substation, wherein a fireproof layer is arranged on the inner side of the substation in a packaging manner; the inner side of the fireproof layer is fixedly connected with a dustproof net; the upper end of the dustproof net is fixedly connected with a transformer; a baffle is fixedly connected in the middle position of the lower surface of the dustproof net; the lower end of the baffle is fixedly connected with the internal lower end of the substation; the internal lower end of the substation is fixedly connected with a motor seat; the upper end of the motor seat is fixedly connected with a motor; the motor is connected with the transformer through a circuit; each port position of the motor is connected with a blade through a shaft separately; ventilating openings are formed in the internal lower end of the side surface of the substation and the internal lower end of the side surface of the fireproof layer; and the lower end of the substation is fixedly connected with a base. The power transformation instrument transformer group with the protection function has complete function, higher safety and can reduce occurrence of safety accidents.