Magnetron control method and device, frequency converter and microwave cooking device

The invention discloses a magnetron control method, a magnetron control device, a frequency converter and a microwave cooking device. The magnetron control method comprises the following steps of: acquiring the temperature of a magnetron; determining a temperature threshold gear matched with the temperature of the magnetron; and controlling the magnetron to work according to the heating power of the magnetron corresponding to the temperature threshold gear matched with the temperature of the magnetron; wherein a plurality of temperature threshold gears are arranged step by step, and the levelsof the heating power corresponding to the plurality of temperature threshold gears are reduced step by step along with the step-by-step increase of the levels of the temperature threshold gears. Cooking can be completed when food is little, the cooking effect of food materials is improved, and meanwhile the reliability of the magnetron is improved. 本发明公开一种磁控管的控制方法、磁控管的控制装置、变频器及微波烹饪装置，该磁控管的控制方法包括以下步骤：获取磁控管的温度；确定所述磁控管的温度所匹