Microwave thermotherapy can effectively make up for the shortage of surgery, chemotherapy and radiotherapy alone, and can effectively improve the cure rate and remission rate of malignant tumors. At present, the main application areas are: 1. local heat therapy alone for malignant tumors Indications: certain superficial tumors, such as breast cancer, skin cancer, head and neck metastases, etc.; a. advanced malignant tumors that have recurred after radiotherapy, chemotherapy or surgery and have lost the chance of radical treatment and are not suitable for radiotherapy, chemotherapy or surgery, can be treated with heat therapy alone as palliative treatment. b. Residual tumors that cannot be removed by surgery; c. Intractable pain of advanced cancer. 2. Combined application of heat therapy and radiotherapy 3. Combined application of heat therapy and chemotherapy 4. Combined application of heat therapy with radiotherapy and chemotherapy for malignant tumor