Normally, boys usually start growing pubic hair around the age of 11 to 13. Most boys begin to grow pubic hair when they reach puberty, which is around the age of 11 to 13. After puberty, boys’ reproductive organs, such as the penis and testicles, begin to develop gradually, and the development of secondary sexual characteristics, such as the laryngeal nodes and pubic hair, will gradually become visible, resulting in rapid and noticeable changes in the body. The obvious physical changes may cause some boys to be troubled and experience mental health problems such as low self-esteem and anxiety, which can be alleviated by participating in outdoor sports and maintaining a good mood. In addition, adolescent boys should also pay attention to do a good job of cleaning the genital organs and develop good living habits to avoid inducing genital inflammation.