Adult body temperature of 35.1 degrees, if it is a transient hypothermia, generally not too harmful, if persistent hypothermia, may lead to multi-organ damage. Generally lower than 36 degrees of body temperature belongs to the phenomenon of hypothermia, if the adult body temperature of 35.1 degrees, may be due to measurement error, can be measured again, if there is still hypothermia, it may be transient hypothermia, such as sudden entry into the phenomenon caused by the low temperature environment, will not cause significant harm, usually will return to normal. However, if the body temperature is persistently low, it may be caused by low basal metabolic rate, infection, connective tissue disease, immune dysregulation syndrome, etc., which may induce cardiovascular, cerebrovascular and neuroendocrine system diseases. It is recommended that if an adult’s body temperature persists at 35.1 degrees, he or she should go to the hospital in a timely manner to find out the cause of the problem and then receive targeted treatment.