The expert's answer is: Yes, because the extension is to make the foreskin of the penis in the body outside the body, the absolute length of the foreskin remains unchanged, and the penis body grows, so the foreskin is relatively short, and it is no longer the foreskin, which can be described as killing two birds with one stone. However, if you have undergone prepuce surgery, the extension effect may be poor, because the extended penis may not be wrapped in prepuce and can only be retracted, so the effect is poor. Therefore, too long foreskin does not affect penis lengthening surgery, but before doing penis lengthening surgery, patients should think twice about whether they really want to do penis lengthening surgery.