Most people with tumors do not sweat all the time. Tumors in the early stage usually have no obvious symptoms and will not have the symptom of always sweating. Tumor patients may show swelling and pain in the tumor site, and in the late stage, tumor metastasis may easily occur, and pain and discomfort in the metastatic site may occur. A small number of tumor patients always sweat, manifested as night sweating, such as lymphoma patients. In order to know the condition of the tumor, it is necessary to do pathological biopsy, ultrasound examination, CT examination, magnetic resonance and tumor markers. Patients who always sweat or suspected of having tumors need to consult the doctor in time and take active treatment, do not take medicine without authorization.