Microwave ablation is a commonly used thermal ablation method in tumor treatment method and a minimally invasive treatment method. The principle is similar to that of microwave oven, in which a long microwave needle is punctured to the location of the lesion, and a high temperature of about 80℃ is generated by emitting radiofrequency and microwave, which is maintained for 3-5 minutes to kill the cells in the area and achieve the purpose of ablating the nodules. Microwave ablation is suitable for: 1. Tumors that cannot be removed by surgery; 2. Primary tumors such as solid tumors in the liver and lungs that cannot be removed by larger surgeries due to age, heart, liver, etc.; 3. Palliative treatments, where the patient’s condition is serious and the tumors are large and numerous, and the effect of other treatments is not obvious, microwave ablation can be applied to reduce the tumors in order to prolong the patient’s life.