Sexual response usually occurs in girls during puberty (10-18 years old), and in some girls even earlier. Puberty is the stage from the beginning of the development of secondary sexual characteristics to full maturity, and is generally characterized by physiological growth with sexual maturation as the main component. The endocrine system begins to develop and mature during puberty, with the reproductive system and the hypothalamic-pituitary-ovarian axis gradually developing and maturing. At this time, the ovaries begin to develop and mature, and the body begins to secrete estrogen, progesterone and a small amount of androgens, which stimulate the body, the vagina begins to secrete fluid, the external reproductive organs develop, and menstruation occurs. When these female characteristics appear, it indicates the emergence of sexual response in girls. Due to differences in developmental speed, hormone secretion levels, and individual physical conditions, the age of puberty begins to vary from person to person, so the age of sexual response also varies, generally between 10 and 18 years old. In daily life, parents need to pay attention to their children’s development, if the child’s sexual development is too early, there may be premature sexual maturity, you need to go to the hospital pediatric department for symptomatic treatment in time, so as not to affect the child’s height development.