The invention discloses a secondary pressure plate for electric equipment and operation method thereof. The secondary pressure plate comprises a pressure plate main body, a clutch mechanism and a fixed shaft; the clutch mechanism comprises a first base and a second base which are all installed on the top surface of the pressure plate main body, wherein an electromagnet is installed on the first baes, and a stretching tongue is installed on the second base; one end surface of an iron core of the electromagnet is opposite to one end surface of the stretching tongue, the on and off of the electromagnet can implement the connection and separation of the stretching tongue and the iron core; the fixed shaft is installed on the bottom surface of the pressure plate main body; a first binding post and a second binding post are installed on the end surface of the free end of the fixed shaft, the first binding post is electrically connected with the iron core, and the second binding post is electrically connected with the stretching tongue. Through the adoption of the method disclosed by the invention, the blocking/deblocking efficiency of the secondary pressure plate is improved, and the tedious degree of the entire installation of the secondary pressure plate is reduced.