Fever may be caused by a decrease in immunity after crying, or it may be caused by other diseases. Many people due to excessive sadness caused by crying, crying after a short period of time the body’s immunity is reduced, at this time by the wind and cold stimulation, easy to cause cold and fever, but the temperature will not be too high, generally between 37 ℃ ~ 38 ℃, it is recommended to calm down in time, can improve the symptoms through physical cooling, but also more rest, drink more water, etc., the body temperature will gradually tend to normal. During the recovery period also drink more warm water, can accelerate the body’s metabolism, to help relieve fever. There are individual patients who have fever when they cry and have a high body temperature, probably above 38℃, which may be caused by other physical illnesses, such as upper respiratory tract infections, lung infections, etc. The patients are advised to take targeted treatment according to their conditions. It is recommended that patients target treatment according to the condition, and can take anti-infective drugs as prescribed by the doctor, such as aminomemetic tablets, levofloxacin and other drugs. It is recommended that patients should not be overly nervous or anxious during the recovery stage; they should eat more nutritious food that is easy to digest, and maintain the habit of eating small meals, which is conducive to the early recovery of the body.