Baby night sweats may be caused by physiological factors, but also may be caused by vitamin D deficiency, tuberculosis and other pathological factors. 1. Physiological factors: when the ambient temperature is too high, or when the baby is covered with too thick a coat, due to the child’s fast metabolism, it is easy to appear the phenomenon of night sweats. 2. Vitamin D deficiency: small infants in the early stages of vitamin D deficiency, often manifested as increased sweating, night terrors, crying, followed by skull softening, X-shaped legs, O-shaped legs and other skeletal changes. 3. Tuberculosis: the incidence of this disease is still high, manifested as cough, cough, weight loss, night sweats, afternoon low fever and other phenomena. Baby sleep night sweats have other causes, such as hyperthyroidism and other diseases, it is recommended that timely medical attention to identify the causes, if necessary, with the doctor to carry out scientific treatment.