Based on the body temperature of 35.8℃, it is impossible to judge whether it is normal or not, and it needs to be judged according to the specific state it is in. Normal human axillary body temperature is between 36℃-37℃, body temperature 35.8℃ is slightly lower than the normal value, if there is no other discomfort, and there is no original disease that causes hypothermia, it can be regarded as a basically normal body temperature. Such cases are common in patients who are poorly kept warm or have been in a low temperature environment for too long, and the body temperature can generally return to normal after strengthening warmth. In addition, recent viral colds, low dietary intake of calories, overexertion, etc., can cause the body temperature to be slightly below normal. After simple treatment and nutritional supplementation, the body temperature can be restored to normal. In general, we can pay attention to diet and nutrition, prevent cold and keep warm, do not stay up late, pay attention to rest, actively participate in physical exercise, and if other uncomfortable symptoms appear in the body, you should promptly go to the internal medicine department for consultation.