The timing of the cessation of male development is related to family genetics, personal environmental factors, nutrition, etc. Most children stop developing at about 18-19 years of age. Male sexual development usually begins in children at the age of 11-12 years old, and children can show growth and thickening of the penis, appearance of pubic hair, increase in testicular volume, appearance of throat nodes and even seminal emission. Puberty usually lasts for 5-7 years, and when a child reaches the age of 18-19, puberty is basically over. At this time, the male reproductive organs and sexual development has reached a mature level, similar to the adult stage, generally is to stop developing. During the development process, you should be careful not to wear tight underwear, so as not to affect the development of the genitals if there is a problem of prepuce to deal with in a timely manner. Boys have a stronger appetite and eat more than girls during development, so the intake of cereal is very important for them to pay attention to nutritional enrichment.