Pediatric sleep disorders(PSD) are common neurological and behavioral disorders in pediatrics. In recent years, the incidence has been increasing year by year, and they have become an important public health issue that poses a threat to children's physical and mental health. This disease not only directly interferes with children's normal sleep rhythm, but also significantly affects the secretion of growth hormone, bone development, cognitive function, and emotional regulation, causing multiple adverse effects on the growth and development, mental health, and long-term quality of life of the children. Traditional Chinese medicine(TCM) has a complete system and proven efficacy in the diagnosis and treatment of this disease, and it has unique advantages and clinical value. Based on the core theory of "Shaoyang pivot-mechanism" in traditional Chinese medicine, this article deeply explains the close relationship between the physiological and pathological characteristics of children and the functions of Shaoyang, clarifying that the core pathogenesis of pediatric sleep disorders is the dysfunction of the Shaoyang pivot-mechanism, which further leads to the abnormal ascending and descending of qi, the disorder of qi transformation in the tri-jiao,and the weakness of the Shaoyang gallbladder qi. Eventually, it results in the failure of yang to enter yin, the disturbance of the spirit by phlegm-heat, and the failure of Hun to stay in its abode. Chaihu Longgu Muli decoction is a classic formula in traditional Chinese medicine for harmonizing Shaoyang and calming the mind. It has the effects of regulating liver and resolving depression, calming the spirit and the mind, harmonizing yin and yang, and resolving the pivot-mechanism. In clinical application, it can be flexibly formulated based on the five common syndromes of liver depression to generate fire, imbalance of yin and yang, disturbance of the spirit by phlegm-heat, weakness of the gallbladder qi, and heat in the gallbladder and liver, in order to provide precise treatment. This fully demonstrates the diagnostic and therapeutic concepts of traditional Chinese medicine, which are syndrome differentiation and treatment based on the overall condition and the principle of managing the root cause of the disease. The paper provides new ideas and theoretical basis for the prevention and treatment of pediatric sleep disorders with traditional Chinese medicine.