The child is only ten years old and is in the first stage of development (9~ 12 years old, the second stage: 12~ 15 years old, the third stage, after 15 years old). Many hormones in adolescence secrete Prosperous Wang, such as hormones that promote puberty growth. Estradiol is the most important for women, testosterone is the most important for men, but estradiol is the most important. I think we should observe the development of secondary sexual characteristics, such as beard, voice change, armpit hair and pubic hair. If the secondary sexual characteristics are obvious and the body is still female, plastic surgery should be taken clinically. If the development of secondary sexual characteristics has been poor, it is recommended to go to the local endocrinology department for review. During this period, we should have a reasonable rest and strengthen exercise.