Valve wireless control system and control method

The invention provides a valve wireless control system and method, and the system comprises a computer, a first signal isolation converter, an intelligent wireless data transmission host, an intelligent wireless data transmission extension, a second signal isolation converter, a control box, and an electric valve. The first signal isolation converter converts a signal output by the computer, and the intelligent wireless data transmission host transmits the signal transmitted by the first signal isolation converter to the outside; the intelligent wireless data transmission extension set receives a signal transmitted by the intelligent wireless data transmission host, the second signal isolation converter converts the signal received by the intelligent wireless data transmission extension set, and the control box converts the signal into a control analog signal so as to control opening and closing of the electric valve through the control analog signal. According to the invention, the switch of the drain pipe v