Pressure cooker

The invention provides a pressure cooker. The pressure cooker has a pressure valve (13) which closes and opens a steam ventilation hole (131) communicating the internal of a pot (10) and a cover body (11), and a pressure valve close-open part (19) which switches between an open state and a close state of the steam exhaust hole (131) by the pressure valuve (13); besides, the pressure cooker also has a control portion which controls a heating device and the pressure valuve open-close part (19) in order to perform cooking process including a heating process and a boiling maintenance process. Besides, the control part controls the open-close part (19) of the pressure valve in the boiling maintenance process in order to reduce pressure inside the pot (10), and the pressure reduction speed of the pressure reduction amount per unit time is variable. 本发明提供种压力式煮饭器。压力式煮饭器具有：压力阀(13)，其对连通锅(10)内与盖体(11)内的蒸汽排出孔(131)进行开闭；以及压力阀开闭部(19)，其切换压力阀(13)对蒸汽排出孔(131)的开闭状态，从而调整锅(10)内的压力。此外，还具有控制部，该控制部控制加热装置和压力阀开闭部(19)，以进行包括升温步骤和沸腾维持步骤的煮饭