The invention provides a high-frequency vacuum wood drying method and high-frequency vacuum wood drying equipment. The drying method comprises the following steps that wood is clamped between a positive electrode plate and a negative electrode plate, heating parameters in the wood drying heating stage are set, an electron tube lamp filament is preheated, positive voltage is exerted onto an electron tube anode, the process starts to enter the heating stage, anode current and grid electrode current are automatically turned step by step until the anode current reaches the set range, whether the anode current is changed or not is judged, if the anode current is changed, the anode vacuum variable capacitor is automatically regulated so that the anode current is maintained in the set range, if the anode current is not changed, the wood is continuously dried until the set drying time is reached, and the wood drying is completed. The anode to grid electrode ratio is maintained in the set range, the anode current and the grid electrode current are automatically regulated step by step, the regulation is precise, and the real unattended operation is realized.