The male penis does not develop beyond puberty, and most men rarely experience penile growth after the age of 18. Penile development is divided into two stages, including the developmental stage of infancy and puberty, and it is difficult for the penis to develop again after the completion of these two stages of development. In daily life or in advertisements, the second development of the penis is not scientific, there is no theoretical basis, just some gimmicks. Under normal circumstances, the penis is about 3-7cm in the soft state, and 10-16cm in the erect state. Generally speaking, the length of Asian men’s penis is shorter than that of European and American men, so as long as both husband and wife are satisfied with their sex life, the size of the penis doesn’t have to be overly obsessed with.