A body temperature of 35.2℃ is not a low fever, which is usually caused by too rapid heat dissipation or too slow heat production. Low fever generally refers to the human body temperature is elevated and in the range of 37.3 ℃ ~ 38 ℃, body temperature of 35.2 ℃ belongs to the low body temperature. At this time, the body’s heat dissipation efficiency is higher than the efficiency of heat production, which can be seen in a long time in a cold environment or exposure to cold and wet, blood loss, low immunity, endocrine disorders and so on. 1. People who have been in a cold environment for a long time or exposed to wet and cold, or people with low immunity, should keep away from the cold environment, add clothes, rub the whole body, and take high-calorie food in time, while exercising appropriately to increase heat production. 2. Patients with excessive blood loss need to stop bleeding in time, and then replenish plasma, daily should take more animal liver, meat, vegetables, shrimp, egg yolks and other iron-rich foods to promote blood cell production. 3. Endocrine disorders can also appear low body temperature, such as hypothyroidism, which can cause a decrease in basal metabolic rate, resulting in a decrease in body temperature. Treatment is usually with levothyroxine sodium tablets. The cause of hypothermia is also complex, if accompanied by dizziness, fatigue, drowsiness and other symptoms, it is recommended to go to the hospital for examination, to clarify the cause of the disease, and active treatment.