Nine-year-old little boy genital organs did not develop is generally a normal situation, but should also be alert to the possibility of hidden penis, developmental micropenis and so on. Nine-year-old little boy little boy has not yet reached puberty, the genital organs did not develop is generally a normal situation, do not need to worry too much. However, if the genitals are not visible, you need to be alert to the possibility of developmental micropenis and so on. The onset of developmental micropenis may be related to abnormal hormone secretion, when gonadotropin secretion is insufficient, it may lead to the occurrence of micropenis. If you find that the nine-year-old boy’s genitals have abnormalities, you should go to the hospital in time to diagnose, improve the relevant examination, clarify the cause and follow the doctor’s instructions to deal with.