The invention discloses a control method of a remote-control high-voltage switch, which relates to the technical field of control of high-voltage switch device. The shortcomings of complex operation, lack of rigorous steps, and lower reliability and safety exist in the prior art; the control method comprises the following steps of: logging in, pre-reviewing, confirming, re-confirming, sending instructions of connection and disconnection; accordingly, the accuracy of connection and disconnection is ensured, the misoperation is effectively prevented, the safety and the reliability are increased, and the operation is convenient.