Penis that is still small after accurate measurement can be treated with different interventions according to different age groups, such as: medication and surgery. In China, the average length of adult penis is 6~8 centimeters in the interstitial state and 10~12 centimeters in the erect state, and 1~2 centimeters above and below the average value is the normal range. If you are in childhood and your penis is measured to be small, you can intervene with androgenic drugs as prescribed by your doctor, such as: testosterone enanthate, testosterone propionate and so on. It is also possible to surgically alter the growth curve of the penis to achieve a change in penis length later in life. If the penis is still small after accurate measurement in adulthood, penis lengthening surgery can be performed, which mainly involves freeing a section of the relatively fixed part of the penis root to make it a movable part of the penis, and an increase in the length of the penis can be achieved. However, if the length of the penis is within the normal range, it is not recommended to do lengthening surgery, which may make the solidity of the penis decrease. If the penis is small after accurate measurement, it is recommended to seek medical advice for symptomatic intervention or treatment.