Parents are looking forward to their children growing up quickly, but are a little anxious if they grow up too fast and early. There is an international trend for children to grow faster and earlier. American child experts have found through research that the physical signs and behaviors of 10-year-olds are now equivalent to those of 15-year-olds in the past. In other words, American children have matured by a full five years. However, the developmental age of Chinese children does tend to gradually advance by about one year, i.e. from 11 to 10 years old for girls and from 12 to 11 years old for boys. With the continuous improvement of living standards, the early pubertal development of Chinese children is physiological and normal, and there is no need for Chinese parents to panic. However, there is a phenomenon that needs to be alerted, namely precocious puberty, which is a pathology and needs to be checked in a hospital. That means early development is normal, while precocious puberty is abnormal. So, what makes children become precocious? From the analysis of current cases, it is mainly non-disease causes, such as economic factors: due to economic affluence, superior family living conditions, and factors of disease reduction; dietary factors: children often like to eat hormone-containing foods, such as broiler, turtle, etc.; environmental factors: detergents, pesticides, plastic industrial emissions and their decomposition products can produce a series of hormone-like pollutants in nature; genetic factors, which account for about For example, if a mother has early menstruation, her daughter is likely to have early menstruation as well; cultural factors: some children are exposed to images of behaviors beyond their mental age from movies and videos, which can also affect their physiological development when stimulated. Chinese experts also give their opinions on the health and social hazards associated with early sexual maturity. 1. The body does not grow taller. Since sex hormones can promote bone growth and accelerate growth; they can also promote epiphyseal closure and make growth terminate early. Therefore, the growth cycle of children with precocious puberty will be significantly shortened and there is not enough time for development, which eventually makes their height as adults shorter than the average person. 2. Tumor signs. The cause of a small number of children with precocious puberty may be due to intracranial tumor compression, which will endanger patients’ lives if not treated in time. 3. Early sexual behavior. Precocious children’s psychological development and physical development are extremely mismatched, coupled with the patient’s young physiological age, shallow social experience and poor self-control, the risk of early love, early pregnancy and early marriage increases. 4, personality repression. Children with precocious puberty may carry a heavy burden of thought prematurely because they are different from their surrounding partners in body shape and appearance, resulting in inferiority complex, fear and anxiety, increased psychological burden, decreased interest in learning and academic performance, and cognitive ability lagging behind that of students in the same grade. This will have a long-lasting negative impact on the mental health in the future. In short, precocious puberty will cause incalculable harm to oneself, family and society. To prevent precocious puberty, it is necessary to start from daily life; the sudden acceleration of height growth before the age of 10 is often a sign of precocious puberty, and parents should take their children to the hospital for consultation and medical treatment in time. In addition, parents should pay more attention to observe whether their children’s secondary sexual characteristics appear too early. For example, if there are traces of secretions when you wash girls’ underwear, you should also take them to the hospital for examination. It is also important to control the diet properly, avoid eating too much fatty food, eat less sweets, but ensure the intake of protein, and should eat more vegetables and fruits. Special attention should be paid to avoid eating nutritional products that may contain sex hormones and not to use skin care products that contain sex hormones. Finally, it should be emphasized that parents, schools and society as a whole should create a good living environment for children, such as not exposing them to age-inappropriate (inappropriate for children) visual stimuli, so that their natural instincts can be brought into play and gradually realize the return of “tradition”.