The children who are obese to puberty, many will appear precocious sexual maturity problems. The majority of obese girls lead to precocious sexual maturity, unlike boys who are too obese, which can lead to delayed sexual development, parents of children who are about to enter puberty should pay extra attention to the development of their children. Excessive fat can make androgens into estrogen: “In fact, obesity has an impact on children’s sexual development in medical research, fat children generally have early sexual development. However, it has now been found that obesity in boys to a certain extent can again impede sexual development.” Pubertal development in boys generally begins between the ages of 10 and 14 and is completed gradually over a five-year period. If there are still no signs of pubertal development beyond the age of 14, or if it takes more than five years from the start of puberty to the perfect development of the reproductive organs, it is medically known as delayed pubertal sexual development. “Delayed development is almost always a small fat dun.” The amount of fat in normal children should account for no more than 20% of their body weight, but children who come to the clinic with delayed puberty have as much as 30-35% fat. “Fat contains an aromatase enzyme that converts testosterone into estradiol, and if the amount of fat is too high, too much androgen in the body will be converted into estrogen, and the boy will have secondary sex characteristics that are not obvious, or even breast development.” Parents of small fat pier should take the lead to achieve a light diet: how to identify whether the child is stunted? There is no data to prove that the amount of fat will cause delayed sexual development. Therefore, if the boy in the family is particularly fat, parents should pay attention to his sexual development and can have regular testicular measurements. “The earliest physical change in a boy’s pubertal development is when his testicles start to get bigger.” The volume of each testicle is only 2-3 cubic centimeters in childhood, can exceed 5 cubic centimeters at age 10-12, and can develop to 15-25 cubic centimeters during puberty. “If a boy does not show any changes by the age of 10 or does not reach 5 cubic centimeters by the age of 14, parents should pay special attention and take him to the hospital for an examination.” “Helping little fat pier to lose weight is not an easy task and requires parents to change their lifestyles starting with themselves.” Children’s weight loss does not advocate the use of drugs, generally through diet and exercise to improve. “Child obesity is largely influenced by parental diet and lifestyle habits, so parents should take the lead to do a light diet, take their children to do 15-30 minutes of aerobic exercise every day, and develop regular lifestyle habits.”