We often meet young people who complain that they are afraid to get married because their penises are too small. The young people who visited the clinic also complained that their penises were smaller than others, worrying that a small penis is a disease, and even more worried that it will affect the sexual life of the couple after marriage. As for those young people who are difficult to talk about, they are suffering from psychological torture and suffering. In fact, the size of the penis, both racial differences, but also individual differences. Racial differences are particularly obvious, such as the white, black penis is generally larger than the yellow penis. The difference in the face is more significant than the difference in height between Caucasians and yellow people, both in a weak state and in an erect state, the difference is great. Similarly, there are large differences between individuals of the same race or the same ethnic group. This is as different as people’s height, fatness, thinness, and facial features. The size of the penis and sex life is also a concern. Some people recognize that the larger the penis, the stronger its sexual ability. In fact, the male sexual ability mainly androgen influence, but also need to have a healthy sexual psychology, normal erectile function and nerve reflexes, perfect blood circulation system and sufficient sexual knowledge and sexual art. The size of the penis is never an important factor, and studies have shown that women’s sexual satisfaction has nothing to do with the size of the penis, because the female vagina is very stretchable and can adapt to different sizes of penises. The nerve endings of the vagina are concentrated in the outer 1/3 of the vagina, which produces a “grip” on the penis during sexual intercourse, while the 2/3 of the vagina is fully expanded during the sexual response and lacks enough nerve endings to produce sensation, so the size of the penis has little significance for vaginal sensation. The most sensitive point in the vagina is located in the front wall at 5 cm from the outer mouth, and the stimulation of this point is of great significance to the pleasure of orgasm for the woman, therefore, the erection of the penis can exceed 7 cm to meet the requirements of sexual intercourse, it can be seen that the sexual function of men must not be the hero of the penis length. How to determine the size of the penis, not only with the naked eye, need to be measured to determine. To go to a regular hospital, experienced doctors will give the measurement. The method is to be at room temperature 18 ℃, so that you are in an upright position, with a ruler, the front end of the top of the penis above the pubic bone area, the penis is lifted and the body presents 90 ° ( vertical position ), to measure the length of the tip of the penis head at the pubic symphysis. Shi Chengli (1963), a famous contemporary sexologist in China, measured the size of the penis of 1,412 healthy young Chinese men when flaccid and the length of the penis of 1,26 healthy men when erect. The results showed that the average length at normal condition was 8.37 c m; the range was 4.0-14.5 cm; the average circumference was 8.3 cm; the range was 4.5-12.0 cm; the average length of the penis in the 20-year-old group was 7.1 cm; the average length at erection was 10.75 c m; the range was 8-14 c m. These figures of his survey have been used as the basis for contraceptive use in China. s these survey figures have been used as a reference basis for condom production in China. Erected penis length measurement method: can be used to pull the penis measurement method, that is, after the person is standing, pinch the head of the penis with your hand, pull the penis with force to the front, pull until it can not be extended, measure the length of the pulled penis, the length after the pull and the length of the erection is basically the same, with this method to measure the erect penis length, as long as it is above 8cm, it will not affect the sex life after marriage, not to mention worry about their penis is too small. It should be reminded that some people are fat, or now gradually fat people often feel that their penis is small or smaller, in fact, because too much fat in the small abdomen, thickened, looks smaller penis, but in fact there is a part of the penis buried in the fat under the skin, do not believe, you push the fat in the small abdomen with your hand. Then you will find that the penis is not short at all. I often use this method in clinical visits to relieve patients who suspect that their penis is short, they look, even they laugh at themselves is superfluous worry. In summary, young friends, do not need to worry about their penis size, as long as a measurement will know the size. If you have a disease or suspicion of small penis, you must go to a regular specialist hospital for examination, do not throw yourself at doctors to avoid being deceived.