Many parents think that their children’s “penis” is small, it will naturally develop into a mature adult. In fact, if your child’s “penis” is significantly smaller than that of children of the same age, you must pay attention to it. In the child before puberty not to pay attention to it, into puberty, the child’s sexual development speed will be more obvious behind other children of the same age, and eventually will directly affect the child’s reproductive health as an adult such as sexual dysfunction, infertility and other male diseases, but also let the child produce low self-esteem. “What does a small penis have to do with it? According to statistics, 60% of children with sexual dysplasia suffer from obesity, obese boys have a feminine tendency, the perineum fat accumulation is obvious, so that the original penis is not buried in fat in the hidden type, outside the body appears more short, some children outside the body only reveal the foreskin. The excessive fat in the perineum buries the scrotum and testicles, and the testicles are not conducive to development in higher temperatures. Obesity can make the body estrogen significantly higher, endocrine disruption caused by the hypothalamus – pituitary – gonadal axis secretion abnormal, gonadotropin secretion is inhibited, gonadal development start delayed or even can not start, thus affecting the development of the reproductive system. Some studies show that the bone age of obese children is about two years earlier than that of children of the same age, which means that their puberty ends two years earlier than that of other children, thus shortening the time of their gonadal development and affecting the sexual life and reproductive function of children in adulthood. When is the right time to treat? Sexual development in children can be divided into two stages: prepubertal and pubertal. Some studies have found that the problem of male hypogonadism in children should be solved during prepubertal period. What are the common diseases of small “penis”? The common diseases of small “penis” in children are: congenital penile dysplasia, congenital testicular dysplasia, small penis, occult penis, penile scrotal fusion, penile scrotal transposition, penile torsion, cryptorchidism, syringomyelia, varicocele, hypospadias, epispadias, duplication of urethra, urethral valves, ectopic cysts, urethral polyps, prepuce, urethra, urethra, Urethral polyps, prepuce, prepuce, etc. All these diseases need to be seen in time and solved as early as possible to avoid affecting the sexual development of children.