1, bone age check to go to formal institutions smart parents, often go online to look up information or go to formal hospital consultation. However, some parents are attracted by the signboard of “height increase” of various private institutions, not knowing that the irregular treatment not only cannot promote the child’s height, but may even affect the child’s adult height. It is important to point out that other than regular large hospitals, other institutions simply do not have the ability to do endocrine, bone age examination for patients. 2, precocious sexual maturity is one of the causes of dwarfism Dr. Cheng said she once treated a 7-year-old girl with precocious sexual maturity, a year ago her right breast suddenly emerged a small lump, parents think early development, late development are the same, did not pay attention. Later, the breast continued to increase, the parents sent her to a small hospital nearby for treatment. The doctor thought the child had grown a lump or breast hyperplasia, and gave the child external anti-swelling medicine to activate blood circulation, and even internal medicine to eliminate breast hyperplasia …… Recently, after Dr. Cheng’s examination, the girl suffered from precocious puberty and should use drugs that inhibit the release of gonadal hormones to control the occurrence of precocious puberty. Although she is currently taller than children her age, her bone age is more than 2 years early and her potential to grow taller is not good if not treated in time. Dr. Xinran Cheng reminded parents that precocious puberty is one of the causes of short stature in children. Parents should master the laws and common sense of their children’s growth and development, pay attention to their children’s psychological and physiological changes, and go to the hospital in time to achieve early detection, early diagnosis and early treatment. 3, short-term height increase accelerates bone age aging Dr. Cheng believes that most people do not need to take height-enhancing products as long as they have balanced nutrition, reasonable exercise and adequate sleep. Some so-called height increasing products can indeed see obvious results in the short term. In fact, it is to accelerate the aging of the bone age, overdraft the future height, and even promote the early closure of the bone age, growth suspension. Human height is determined by bone age, not by age. Therefore, it is recommended to do bone age test for children every six months.