Early development of girls refers to the early appearance of secondary sexual characteristics, including physiological and pathological causes, physiological factors need to adjust the dietary structure accordingly, while pathological factors need to be clarified and targeted treatment (such as surgical removal of pituitary tumor). 1. Physiological factors: excessive intake of anti-seasonal fruits and fast-farmed poultry in the diet will lead to an increase in estrogen level in the child’s body, which will lead to the early appearance of the secondary sex characteristics, i.e. early development. It is necessary to adjust the diet structure, try to eat seasonal fresh fruits, avoid eating fast-farmed poultry and meat, regular work and rest, and appropriate exercise, which can delay the early development of girls. 2. Pathological factors: certain diseases such as pituitary tumor can lead to abnormal hormone levels in the child’s body, resulting in the phenomenon of early development, cranial MRI/CT and other tests can assist in clear diagnosis, and can be treated through surgical removal of pituitary tumors and other means of treatment, the treatment can be slowed down the early development of girls. It is recommended to consult a doctor in time to make a clear diagnosis to avoid delaying the condition of the girl’s early development.