Standing up on the sixth day of circumcision is painful, and is mainly considered to be related to factors such as short foreskin, poor healing, and bacterial infection. 1. Short foreskin: The foreskin removed during the operation is too long, which can lead to short foreskin after suture. When the patient stands up, it will further pull the affected area, which will result in pulling pain. 2. Poor healing: poor recovery after surgery and poor wound healing. When you stand up, you will touch the affected area, which will cause pain. 3. Bacterial infections: Bacterial infections after surgery can also affect wound healing. When standing up, the wound can also be touched, causing pain and other symptoms. If any of the above situations occurs, it is recommended that the patient should consult a doctor to confirm the diagnosis and provide targeted treatment.