7-year-old Feng Feng is a second grade student, recently, her mother gave her a bath when she found that Feng Feng’s right breast has begun to develop, her mother rushed to take her to the hospital, Feng Feng was diagnosed as precocious puberty. Professor Li Xingqun from the Institute of Integrative Medicine of Xiangya Hospital pointed out that with the improvement of children’s nutrition, environmental pollution and psychosocial factors, the incidence of precocious puberty in children has risen to the second place of pediatric endocrine diseases. Among the girls who come to the clinic, there are many who have menstruation before the age of 10 or breast development before the age of 8, which should attract the attention of parents and clinicians. According to the theory of Chinese medicine, children are infantile yin and yang, and yin and yang are prone to imbalance. In Su Wen. It is said in “Shanggu Tianzhen Lun” that at the age of seven, the kidney energy is strong, the teeth and hair grow, and at the age of two, the heavenly sebum arrives, the Ren pulse is open, the Taichong pulse is strong, and the menstruation occurs at the right time. This indicates that the physiological phenomena of reproduction, growth and development of our body are closely related to the abundance of the essence of the kidney. Due to the continuous improvement of modern children’s nutrition, coupled with excessive consumption of tonic products containing sex hormones such as royal jelly, pollen, colostrum, etc., poultry in the breeding of feed adulterated with hormone growth materials, sex-related movies and television in the lives of children, these factors can lead to early activation of the gonadal secretion system of the brain, so that the kidney qi of children who are not yet full of kidney yin is prematurely filled, and the qi becomes fire, and the kidney yin is relatively insufficient to restrain. The kidney yin is relatively insufficient and unable to restrain, thus leading to premature maturation. In their clinical work for many years, they found that children with precocious puberty all have signs of yin deficiency and fire exuberance to varying degrees. They tried to treat precocious puberty with the nourishing and fire-eliminating medicine “San Cao Tang” and found that 90% of the girls had stopped menstruation, the nucleus and vaginal discharge disappeared completely, and the uterus and ovaries shrank, achieving relatively satisfactory results. ”Three Herbs Soup” is composed of Xia Ku Cao, Gentian Cao and Dried Lotus Cao, together with Chinese herbs such as Radix et Rhizoma, Phellodendron, Zhi Mu, Artemisia, Radix et Rhizoma, Radix et Rhizoma, and Dang Pi, among which Xia Ku Cao and Gentian Cao can diarrhea liver fire to treat hyperactive liver yang caused by water not containing wood. The combination of these herbs can nourish yin and submerge yang, and remove fire and disperse nodules, so that the yin and yang of the kidney can be restored to balance, thus playing a good therapeutic role. Finally, it is emphasized that parents should carefully observe their children for signs of precocious puberty for early detection, early diagnosis and early treatment. It is important to try to avoid the influence of external factors on the child, such as hormone-containing foods, birth control pills, pornographic stimulation, and drug abuse. For girls with precocious puberty, some knowledge about sexual development can be given to dispel the child’s mind and pay attention to her psychological health.