Precocious puberty may include the following causes, such as somatic diseases, eating hormone-containing food or exposure to hormone-containing products, environmental pollution, and over-nutrition, which need to be analyzed specifically. 1. Physical diseases: intracranial tumors such as hypothalamic tumors, pituitary tumors, etc., lead to increased secretion of gonadotropins, which leads to early development of sexual characteristics such as precocious puberty, and cranial CT/MRI examination can assist in the definitive diagnosis. 2. Eating hormone-containing food and contacting hormone-containing products: Eating hormone-containing fruits and vegetables or contacting hormone-containing products, such as cosmetics, can lead to precocious puberty. 3. Environmental pollution: Due to the increase of chemical pollution in the society, there are hormone substances in these chemical pollutants, which will pollute the environment, water source, food, etc. If children are in the above polluted environment for a long time, it will lead to precocious puberty. 4. Excessive Nutrition: With the progress of social development and the improvement of family economic conditions, some children have excessive intake of nutrients, and their bodies develop prematurely, resulting in precocious maturation of breasts. If precocious puberty occurs, it is recommended to consult a doctor in time for a clear diagnosis to avoid delaying the condition.