The normal human body temperature is 36 degrees – 37 degrees, body temperature over 37.3 degrees is a symptom of fever. Need to drink more water, pay attention to rest, supplement vitamin C, try to avoid going to places with a lot of people to prevent cross-infection, and be alert to the phenomenon of dehydration caused by high fever. It is important to eat a light diet, with less spicy and oily food, fish, shrimp and seafood to avoid fire and phlegm, which can cause coughing and aggravate the disease. If the fever is caused by a cold, you can take oral anti-cold drugs such as compound aminophenalkylamine tablets and MeiYi pseudo-lax capsules, which can treat and relieve various symptoms caused by common cold and influenza. You can also take oral Chinese medicines, such as Pudilan Anti-inflammatory Oral Liquid, Blue Scutellaria Oral Liquid, Qingkailing Granules, Banlangen Granules, etc. If it is a long-term low fever with cough, hemoptysis, hot flashes, night sweats and significant body wasting, tuberculosis and lung tumor occupancy should be excluded. If the patient is clearly diagnosed with lung cancer, early surgery is recommended, and for those without surgical indications, radiotherapy and chemotherapy are recommended. If patients with high suspicion of tuberculosis or clear diagnosis of tuberculosis, it is recommended to go to regular specialized hospitals for consultation and treatment.