The invention provides an inverter controlling method and device. The control method comprises the steps that each switching tube is controlled according to the control sequence of a control cycle; atthe beginning of a control cycle, firstly the first switching tube of a leading arm is controlled to be turned on, and after the first switching tube of the leading arm is turned on for a first set time, the second switching tube of a lagging arm is controlled to be turned on; when the second switching tube of the lagging arm is turned off, the second switching tube of the leading arm is controlled to be turned on, and after the second switching tube of the leading arm is turned on for the first set time, the first switching tube of the lagging arm is controlled to be turned on; when the first switching tube of the lagging arm is turned off, the control cycle ends; the turn-on time of each switching tube in the same control cycle is the same; and the turn-on time of each switching tube islonger than the first set time. According to the technical scheme provided by the invention, when each switching tube in an inverter is turned off, the voltage and current thereof are zero; and the problem that the safe operation of the inverter is affected by a hard switching phenomenon when the full-bridge inverter is controlled in the prior art is solved.