There is no authoritative standard for the length of male penis, generally the average length of 8.1cm-10.6cm, but there are great individual differences. At present, there is no authoritative standard for the length of male penis, it is generally believed that the average length of the penis of adult men in China is 8.1cm and 10.6cm in the soft and erect state respectively, and the circumference of the penis is 8.3cm and 12.1cm respectively.For children, it is also necessary to compare with the age of the child, and the length of the penis of the full-term baby is more than 1.9cm in the pulling length. Men do not need to be overly concerned about penis length, as long as both parties are satisfied with their sex life. If you have an enlarged penis or a small penis, you need to identify the cause of the problem and take reasonable treatment under the guidance of your doctor. It is recommended that men assess the length of the penis under the guidance of a doctor, and if there is any abnormal discomfort, it is also necessary to consult a doctor in a timely manner.