The utility model provides a pot cover assembly and have its electric pressure cooker. Wherein, pot cover assembly includes: the pot cover, blast pipe (20) set up on the pot cover, and blast pipe (20) have the exhaust passage, voltage limiting valve (30) set up and locate in export (21) of exhaust passage, and voltage limiting valve (30) have the blocking position of shutoff export (21) and open the pressure release position of export (21), and voltage limiting valve (30) are made by magnetic?materials, electromagnetic mechanism (41) set up and match on the pot cover and with voltage limiting valve (30), and electromagnetic mechanism (41) control voltage limiting valves (30) switch over between blocking position and pressure release position. Use the technical scheme of the utility model can solve the easy problem that user experience is poor that leads to of damaging of pot cover assembly among the prior art effectively.