Adult body temperature 37.8℃ belongs to low fever in fever, normal human body temperature is 36-37℃, if the axillary body temperature 37.3℃-38℃ belongs to low fever, 38.1-39℃ belongs to moderate fever, 39.1-41℃ belongs to high fever, more than 41℃ belongs to super high fever. If it is accompanied by symptoms such as episodic nasal congestion, runny nose, sneezing, sore throat, muscle aches and pains, it is mostly fever caused by upper respiratory tract infection, and you can take anti-cold drugs such as cold and flu granules and compound aminophenalkylamine tablets orally, which can treat and relieve the symptoms of fever caused by common cold and influenza. If it is a long-term low fever, accompanied by cough, hemoptysis, hot flashes, night sweats and significant body wasting, chronic wasting disease is considered, and further examination is recommended to clarify the diagnosis. In case of high suspicion or a clear diagnosis of tuberculosis, it is recommended to go to a regular specialized hospital and generally give anti-tuberculosis drugs for symptomatic treatment.