Pressure cooker cover and cooking equipment

The pressure cooker cover comprises a cover body, a safety valve and a pressure relief device, the pressure relief device comprises a fixing piece, a pressing rod, a locking rod, a first elastic piece, a second elastic piece, a magnetic switch and a warping plate, the fixing piece is fixedly installed on the cover body, the pressing rod is partially arranged in the fixing piece, one end of the pressing rod penetrates out of the fixing piece, and the other end of the pressing rod penetrates out of the warping plate. The pressing rod can vertically move in the fixing piece, the first spring is arranged on the pressing rod in a sleeving mode, a sliding channel penetrating through the pressing rod is horizontally formed in the pressing rod, the locking rod movably penetrates through the sliding channel and is connected with the second elastic piece, the magnetic switch is magnetically connected with the locking rod, and a side hole communicating with the mounting cavity is formed in the fixing piece. And two ends