Circumcision will not affect the length of the penis. Circumcision means that the foreskin completely covers the glans and the coronal groove, but can completely expose the urethral opening and the coronal groove by turning up the foreskin. The length of the penis is the length from the tip of the glans to the root of the penis, which mainly depends on the length of the penile corpus cavernosum, so there is no necessary connection between the foreskin and the length of the penis. The main problem is that the penis is bound under the skin and cannot be exposed normally, which is not simply a problem of circumcision.