The invention provides a pressure cooker air exhausting apparatus. An air exhausting assembly comprises a push plate connecting rod and a floater, wherein the push plate connecting rod comprises a first station and a second station which limits and allows the floater to move to a position for sealing a pressure cooker air exhausting channel; and a sensing assembly has a first sensing state and a second sensing state which are corresponding to the first station and the second station of the push plate connecting rod respectively. According to the pressure cooker air exhausting apparatus, when the push plate connecting rod is in the first station, continuous air exhausting through the pressure cooker air exhausting channel can be performed, so that a pressure-less cooking function is realized; when the push plate connecting rod is in the second station, the floater can move to the position for sealing the pressure cooker air exhausting channel, so that pressure in the pressure cooker is increased and a high-pressure cooking function is realized; and correspondingly, the sensing assembly has the first sensing state and the second sensing state which are corresponding to the first station and the second station of the push plate connecting rod respectively, so that the working states of the pressure cooker can be recognized.