Fever and sweating at night may be caused by infectious factors, menopause, neoplastic diseases, endocrine diseases and so on. 1. Infectious factors. Fever and sweating at night can be considered to be related to infectious factors, such as Mycobacterium tuberculosis infection, bacterial, viral, fungal and parasitic infections, which cause colds, tuberculosis, pneumonia, bronchial inflammation, dilatation and lung abscess, resulting in the upward shift of the body temperature regulating point, which can cause fever and sweating. 2. Menopause. The gradual decline of ovarian function and the decrease of estrogen level in menopausal women lead to autonomic dysfunction, which can cause hot flashes and sweating. Autonomic dysfunction may lead to abnormal body temperature, sometimes with a rise in body temperature. 3. Tumor diseases. Including stomach tumors, lung tumors, intestinal tumors, etc. The process of tumor development and change can cause fever, which belongs to cancer fever. Taking antipyretic drugs can cause sweating in the process of reducing fever. 4. Endocrine diseases. For example, hyperthyroidism, due to the body’s vigorous metabolism, can cause increased body temperature, sweating and other symptoms. To summarize, sweating at night with fever is related to a variety of factors. It is recommended to go to the hospital to find the cause of fever and sweating, and can be combined with the doctor’s advice to treat the cause.