The incidence of physiological and pathological sweating in children is especially high, sometimes making parents very nervous, which requires the knowledge of how to distinguish between physiological and pathological sweating. 1, physiological sweating: the child period, the skin is very young and tender, contains more water, capillary rich, metabolism is vigorous, plant nerve regulation function is not yet sound, easy to sweat when activity. If children are too active before going to sleep, the organism’s organs are metabolically active, which can increase the body’s heat production, during sleep, the skin vasodilation, sweat gland secretion increases, sweating, in order to facilitate heat dissipation. Secondly, eating before bedtime can enhance gastrointestinal peristalsis, increase secretion of gastric juice, and increase secretion of sweat glands, which can cause children to sweat more after sleep, especially within the first 2 hours of sleep. In addition, if the room temperature is too high, or the covers are too thick, or when using electric blankets, can cause sweating during sleep. 2, pathological sweating: some children go to sleep, sweating mainly in the upper half of the night, which is often caused by low blood calcium. Low calcium tends to make the sympathetic nerve excitability increased, as if the sweat gland “faucet” is opened, this situation is especially common in children with rickets. However, sweating is not unique to rickets, but should be analyzed based on the child’s feeding and outdoor activities, as well as blood calcium, blood phosphorus and wrist bone x-ray to determine if the child has active rickets. Sweating in children with tuberculosis is characterized by sweating throughout the night. In addition to this, there are symptoms such as flushing, hypothermia, loss of appetite, and mood changes. Examination of blood sedimentation, anti-tuberculosis antibodies, and chest X-ray often reveal abnormalities. One thing to note is that detailed examination of the neck for enlarged lymph nodes is extremely valuable in the diagnosis of pediatric tuberculosis. According to Chinese medicine, “sweat is the heart fluid”. If the tidal sweating persists for a long time, the heart yin is seriously depleted and should be treated actively. In addition to the treatment, special attention should be paid to self-care, strengthening the necessary physical exercise, developing a regular lifestyle and paying attention to the combination of work and rest.