Under normal circumstances, boys in the developmental stage, especially before the age of 7, the foreskin can completely cover the entire penis head and urethral opening, this is a normal phenomenon, parents need not worry too much. At this time, the long foreskin can protect the penis from external damage. As development proceeds, men will separate the foreskin and glans by themselves by the age of about thirteen, when it is easier to pull the foreskin behind the glans. As youth develops and the penis increases in size, the foreskin will recede backwards and in an erect or natural state, the head of the penis and urethra are exposed beyond the foreskin. The criteria for determining this are: in adulthood, if the foreskin covers the entire glans and cannot be turned up and down, and the mouth of the foreskin is very small, this kind is circumcision; while circumcision can be used to turn the foreskin over by hand and let the glans be exposed. So what are the hazards of overcircumcision? 1, impede the development of the penis, resulting in short penis; 2, prone to infectious diseases of the urinary system, can cause circumcision, glansitis, urethritis, condyloma acuminata, gonorrhea, prostatitis and other diseases; 3, prone to masturbation, impotence and premature ejaculation, affecting the quality of sexual life, serious cases may lead to the inability to have children; 4, bacteria and other infectious agents are often retained in the foreskin to form a foreskin scale, producing a foul smell, prone to infection Reproductive system diseases. After marriage, it is easy to cause female gynecological diseases, such as vaginitis, cervicitis, cervical erosion, cervical cancer, etc.; 5. If the foreskin mouth is narrow, forcibly turning up the foreskin can easily cause foreskin inlay, which leads to penile edema and even glans necrosis. What are the benefits of circumcision? 1, 75% of men after circumcision, sex time has been extended to varying degrees, to prevent premature ejaculation; 2, after surgery, the penis not only completely get rid of the foreskin fetters more conducive to the secondary development of the penis; 3, to eliminate gynecological inflammation caused by circumcision or circumcision indirectly, the incidence of cervical cancer reduced by 58%; 4, to prevent inflammatory infections caused by the quality of semen decline, reduce the risk factors of infertility, and conducive to 5.Prevent circumcision bacteria breeding, eliminate pathogens, eliminate infection; 6.Circumcision can reduce the rate of HIV infection by 60%. This shows that the small foreskin is related to the health of the big hidden danger, male friends can be sure to pay attention to oh!