We often receive online or outpatient inquiries from men about whether their penis length is normal. These include high school students, college students and even some middle-aged men who are strong and fit. Most of them are self-reportedly comparing their genitals with others in public bathrooms and feel that their size is small, or comparing it with the main characters in AV movies, they feel inferior because of their relatively short penis, and therefore they pick hospitals to request treatment and surgery. The length of a man’s penis is related to race, family, genetics, and the nutritional status of puberty, geography, and individual differences. Generally speaking, the penis develops mainly during puberty, and basically stops growing after puberty. In fact, most people have normal penis development, but because of misconceptions in the understanding, which in turn leads to low self-esteem, anxiety, and even some people will have a tendency to depression and affect the psychophysiological health. The average male penis length in China is 10 – 12 cm. This refers to the erect length, not the length in the atrophied state. The erection factor is completely different for each person. Some people can increase the size of their penis by 3-5 times or even more after erection, while others can only increase it by less than a factor of 1 after erection, and it feels about the same size as when it is atrophied, just hardened. Therefore, the size of the penis under atrophy cannot be used to directly determine the length of the penis. Many people measure the length themselves as the atrophied length, so it appears small and short. The length of the penis is measured by using a straightedge along the penis after erection, against the top of the stem root to the bone until the length of the glans end, not from the surface of the skin to the glans end, so if measured in the latter way, the error will be large, the error is 5-7cm or even more for people with obese body types. So very often it is not the penis that is short, but it is covered by subcutaneous fat. How long does a Chinese male need to have a penis? Asian women’s vaginas are much shorter and thinner than European and American women’s vaginas, and European and American men’s penises are thicker than Asian men’s. The average Chinese woman’s vagina is 7-10cm long, and because of its elasticity, it can be extended to about 15cm. A penis that is too long and too thick will not only be uncomfortable for the sexual partner; on the contrary, it can cause pain and injury, and even cause a vaginal tear and hemorrhage. The G-spot, which is the most exciting and orgasmic point for women, is located in the front 1/3 of the vagina, inside the front wall about 3cm from the vaginal opening, so it is more important to have a good position and enough time and intensity to stimulate the G-spot. The average length of the penis is sufficient to stimulate this area. Of course, not all penis short is normal, but also need to determine whether there are hair problems, prepuce, occult penis and other kinds of congenital, acquired abnormalities, and related treatment. At present, there are advertisements on the market advocating that taking a certain medicine such as sex hormones or aphrodisiacs can enlarge and thicken the penis, which is purely a fraudulent scheme, do not believe it. The temporary penis enlargement caused by negative pressure attraction and manipulation massage is not the real meaning of enlargement, but only due to excessive blood filling in the spongy body of the penis, penis lengthening surgery can lengthen the penis, which is only for those patients with excessively short penis for plastic surgery, so that it lengthens 2-3 cm. This procedure involves cutting the suspensory ligament of the penis and then closing it. This inevitably reduces the stability of the penile root. In general, if there is no obvious discomfort, and the penis can be erected normally, have a satisfactory sex life, and the penis size is appropriate, there is no need to make this operation, in fact, there is no need to care too much about the size of their penis, as long as he functions normally, can complete the sex life, and achieve the effect of the satisfaction of both husband and wife, it is enough.