Night sweating is not a specific symptom of cancer. Night sweating is not an early warning sign of cancer, and the clinical symptoms of different cancers are different. Night sweating refers to abnormal sweating during sleep, which can be stopped naturally after waking up. There are many causes for night sweating, including physiological and pathological factors, so night sweating is not a specific symptom of cancer. Therefore, night sweating is not a specific symptom of cancer. For patients, night sweating symptom cannot be used as an early warning signal of cancer. Cancer in different parts of the body has different clinical signs and symptoms. For example, cervical cancer patients may have contact bleeding in the early stage of the disease; breast cancer patients may have abnormal lumps in the breast; esophageal cancer patients may have progressively aggravated dysphagia; rectal cancer patients may have bleeding in the stools; and lung cancer patients may have a dry cough and hemoptysis, etc. Due to the differences in clinical manifestations of cancer, night sweating is not a specific symptom of cancer. Due to the differences in clinical manifestations of cancer, some cancers in early stage may not have obvious clinical symptoms. Regular medical checkups and timely medical consultation for abnormalities are conducive to early detection of abnormalities and timely treatment, which can improve the prognosis.