A mobile soil microwave sterilization device and a sterilization method, comprising: through the active driving device and the carrying device, the microwave device operates in a soil area, and the soil temperature / humidity measurement device obtains specific soil temperature, or humidity, or Temperature and humidity, the microwave power tuning device uses it as the main parameter to calculate the corresponding microwave power through built-in programming and regulate the output power of the microwave device accordingly; the microwave device outputs a microwave of a predetermined power and passes the effect The downward guided wave opening of the cavity directly applies the microwave to the soil, and the sterilization effect of the farming layer of the soil affected by the microwave occurs.一種移動式土壤微波殺菌裝置及殺菌方法,包括:通過該主動驅動裝置及該載移裝置,該微波裝置運行於一土壤區,該土壤溫/濕度測量裝置獲取具體的土壤溫度、或濕度、或溫度及濕度,該微波功率調諧裝置以其為主要參數通過內建編程計算相對應的微波功率,並據以調控該微波裝置的輸出功率;該微波裝置將預定功率的微波輸出,並通過該作用腔朝下的導波開口,將微波直接作用於土壤,使被微波作用的土壤的耕作層發生殺菌效果。