Body temperature 35.7 sweating and fatigue patients may be early viral cold, can drink more warm water, pay attention to rest, etc.; may also be hypothyroidism, should pay attention to diet, eat more iodine-containing foods, such as kelp, etc., can be under the guidance of the doctor to take levothyroxine sodium tablets and other drugs; need to be combined with other symptoms of specific analysis. Normal body temperature is 36~37℃, body temperature of 35.7℃ belongs to hypothermia, which may be physiological factors (such as cold, long-term weight loss, etc.), or viral infections (such as early viral cold); or endocrine system diseases (such as hypothyroidism). Patients with early viral colds may have prodromal symptoms, i.e., fatigue and general malaise, when they do not have fever. Patients should drink plenty of fluids, pay attention to rest, and can take cold and flu medications (e.g., cold and flu capsules, etc.) under the guidance of a doctor. Hypothyroidism patients, thyroxine is reduced, the body can appear hypothermia, sweating and fatigue and other symptoms, you can take levothyroxine sodium tablets and other drugs under the guidance of the doctor. Body temperature has been 35.7 ℃, and accompanied by sweating and fatigue, may also be due to other reasons, the patient should consult a doctor in time to clarify the diagnosis, so as not to delay the condition.