Under the guidance of imaging equipment, a disposable microwave ablation needle is punctured percutaneously to the tumor site. The polar molecules in the tissue move at high speed under the action of the microwave field, rub each other to generate heat, and heat up rapidly in the tumor. When the temperature reaches At around 60°C, tumor cell proteins denature and coagulate, leading to irreversible necrosis. The denatured tumor cells will be swallowed by macrophages, lymphocytes, etc., thus completing the whole process of tumor ablation.