A remotely controlled spray valve comprises a valve body, a valve core and a power module, wherein the power module comprises a piston diaphragm, a piston column, a mounting support, a magnetic monopole, a protective outer cover, a drive device and a mounting box, wherein the mounting box is fixed on the protective outer cover, and the drive device is mounted in the mounting box and comprises a motor, a drive element, a linkage nut, a battery, a logic controller and an SIM communication module. In an actual use process, the logic controller starts or stops the motor according to related instructions, the motor drives the magnetic monopole to move through the linkage nut, the piston column is driven to move under the action of magnetic force, the vertical motion of the piston column can block or loosen a pressure relief hole in the piston diaphragm, the piston diaphragm is controlled under the action of water pressure, and accordingly whether water flow can pass through the valve core is controlled. The spray valve has the advantages that firstly, the improved spray valve has characteristics of being simple in structure and easy to process and assemble; secondly, the opening state of the spray valve can be remotely controlled; thirdly, timely communication alarm is realized.