The utility model provides an irrigate pressure control valve door, including valve body and diaphragm, the diaphragm the edge with the inner chamber wall connection of valve body, for the control chamber between diaphragm and the valve body, just the diaphragm is separated into the front and back inner chamber of valve body the income water cavity, is gone out the water cavity, set up the solenoid valve on the inner chamber wall of valve body, the valve no. 1 of solenoid valve is connected to the control intracavity, valve no. 2 is connected to go into the water cavity, valve no. 3 and atmosphere intercommunication are worked as when valve no. 2 is opened, go into the water cavity, go out the water cavity quilt the diaphragm cuts off, works as when valve no. 3 is opened, go into the water cavity and go out the water cavity to communicate with each other. The utility model discloses in, realize the upper and lower motion of diaphragm through the pressure of control intracavity, and then realize being connected or throwing off of diaphragm and dog, the opening or closing of realization valve.