It is possible to turn on the air conditioner when a patient has a low-grade fever. Hypothermia is a common symptom that refers to a body temperature that is often higher than normal, but below 38°C. Low fever can be seen in tuberculosis, chronic focal infections, post-streptococcal infection status, chronic viral hepatitis, hyperthyroidism, lupus erythematosus, blood diseases, etc. In addition, high temperature work, pregnant women or female ovulation, may also appear low fever. In general, patients in the emergence of low fever, it is possible to open the air conditioning, in the opening of the air conditioning should pay attention to the air conditioning temperature can not be opened too low, at the same time in the opening of the air conditioning, pay attention to maintain indoor ventilation and a certain degree of humidity, so as to avoid the human body to appear obvious symptoms of maladaptation. For patients with low fever can be through warm water scrub, paste fever-reducing paste and other ways to physical cooling, in addition to pay attention to not let the patient overdressed, appropriate to the skin to leave enough space for heat dissipation and so on. If there is any discomfort, you should consult a doctor immediately and take treatment under the guidance of a physician.