Through the skin, lumpectomy or surgery, the microwave electrode needle is inserted into the lesion in the body, which is precisely controlled by computer and the host sends out microwave, destroying it in a short time, while the adjacent normal tissues are rarely damaged, and the body’s anti-tumor immune function can be stimulated after the operation. Therefore, microwave ablation has three major features: precise local efficacy, small systemic toxic side effects and postoperative enhancement of body immune function. It can achieve the same effect as surgery for small primary lung tumors and liver tumors, and even complete cure is possible, and it has good palliative effect for larger tumors. Microwave ablation is mainly applied to primary, metastatic or postoperative recurrent liver cancer, peripheral type lung cancer, kidney cancer, breast cancer, etc.; various tumors that patients cannot tolerate or are unwilling to undergo surgery, radiotherapy or chemotherapy; and some benign tumors such as hemangioma. Microwave ablation is a kind of minimally invasive interventional technology, it is a pure physical therapy, which has neither the toxic side effects of chemotherapy nor the complications of radiation therapy, and not only does not reduce the immunity of the body after the operation, but also can stimulate the anti-tumor immune function of the body, which has relatively less damage to the normal tissues of the body, and the incidence of toxic side effects and complications is low and light, easy to tolerate, and generally no fatal complications. It is widely used in the treatment of hepatocellular carcinoma, peripheral type lung cancer and other tumors.