Tumor thermotherapy is commonly known as the fifth treatment means after surgery, radiotherapy and immunotherapy, which can achieve the purpose of tumor treatment through the principle of heating. The principle is to make the local tumor reach a certain degree of temperature, which can play a certain inhibitory and apoptotic effect on tumor cells, thus achieving the purpose of tumor treatment. In addition, tumor heat therapy has the advantages of safety, non-toxicity and small side effects, which is one of the treatment means for malignant tumors with broad development prospect.