Night sweating is caused by yin deficiency and hyperactivity of yang (deficiency of yin fluid and hyperactivity of yang qi), and night sweating (abnormal sweating after falling asleep and stopping sweating after waking up) caused by the leakage of fluid due to the internal growth of deficiency heat. Night sweating belongs to the Chinese medicine term night sweating, that is, sweating while sleeping, waking up sweating since the symptoms, most of them belong to the yin deficiency. Vegetative yin deficiency, can not converge yang, then yang qi hyper, internal heat, coupled with the human body after sleep yang qi into the internal, yin qi living in the outside, resulting in the loss of muscle surface consolidation (consolidation), the internal heat aggravation, thus forcing the leakage of fluids appeared phenomenon of sweating, woke up yang qi out, consolidation of the muscle surface and the sweating can be stopped. Night sweating is mainly yin deficiency, can be caused by chronic illness, dietary disorders and other factors, the emergence of maladaptive timely consultation, under the guidance of a professional physician’s diagnosis and conditioning treatment.