After circumcision surgery, many patients will find crusting, pus, or even erosion of the glans, and many patients are very nervous about this. In fact, this phenomenon is usually a normal reaction, the main reason for this is that when the patient has a prepuce or a long foreskin, the inner plate of the foreskin and the glans will have adhesions, and during the surgery the adhesions will be completely stripped, but the stripped wound will have a fresh wound on the glans, and the wound will ooze and crust after contacting the air. If a glans scab is found, there is usually no need to be overly nervous, as this scab will slowly fall off over time until it is completely removed and the appearance of the penis is not affected. However, if there is an infection, and if the infection worsens and causes pus or even black necrosis, it is important to rush to the hospital to prevent further damage to the penis.