The utility model relates to a pneumatic type stop valve, including valve body, valve gap and valve rod, be equipped with the intake channel and the exit channel that supply the fluid to pass through in the valve body, pass through the discharge orifice intercommunication between intake channel and the exit channel, the valve gap is with detachable mode fixed connection in valve body upper end, the setting that longitudinally slidable is followed to the valve rod is in the valve body, the valve rod lower extreme lies in valve body exit channel, and the valve rod lower extreme is provided with the valve clack that is used for opening or closing the discharge orifice, the valve rod upper end is arranged in the passageway that the valve gap was equipped with, is connected with the control cylinder that sets up in the valve gap passageway, be provided with in the valve gap and be used for the stop collar spacing to the valve rod, the valve gap top is fixed with the apron, control cylinder top and apron fixed connection. The utility model discloses simple structure can realize that the automation of stop valve is opened or is closed, and long service life, is convenient for change spare part, has reduced use cost.