Many young people are particularly concerned about the length of their penis, and some of them feel that their penis is too short to cause heart disease. The seriousness of the problem can be seen from two examples I have recently seen: in a university dormitory for boys, every night after lights out, students always lie in bed and talk about anecdotes, often mentioning sex and reproductive issues, one of the more introverted students always feel that their penis is too short, and the size of the classmates are far away, so they are very painful inside, and eventually developed into schizophrenia. Another married male teacher in his 40s, found that his wife did not respond strongly during sex, suspected that his wife lacked pleasure due to his short penis, and therefore repeatedly asked for penis lengthening surgery, the examination found that the length of the teacher’s penis is normal, the doctor refused the teacher’s request, but the teacher went to another small hospital to do the lengthening surgery despite his wife’s opposition, and after the surgery felt that the results were not good, and went to another The hospital requested surgery. The hero of the article “He is obsessed with the “penis erection consensus”” performed a foolish comedy because he suspected that his penis was short and superstitiously believed in the penis erection formula. So what is the length of a normal penis? First look at a few groups of data, the Chinese Academy of Medical Sciences once measured the length of the penis of some young soldiers, the results are the average length of the penis normal 6.55cm; Lanzhou area findings are an average of 8.08cm; Shandong area is an average of 7.7cm. the difference between the above three groups of data reflects the existence of certain differences in the length of the penis of men in different parts of China or by the number of people surveyed. It is generally considered that the normal length of the penis is less than 150px as short penis. In addition in the end there is no relationship between penis length and height, some researchers have attempted to make a study in this regard, but at least the current findings are not consistent, so the penis length formula, although it can be used as a reference, but not as a standard. Most people who feel inferior because of their short penis are mainly worried about not being able to meet women’s needs and show their manhood during sex. In fact, less than 5% of the patients with short penis who come to our hospital for medical treatment actually affect their sex life. In addition, although there are many cases of wives bringing their husbands for treatment of impotence and premature ejaculation, it is extremely rare for women to ask their husbands for penis lengthening treatment. Therefore, in addition to a few patients whose penis is really short and affects their sex life, most people do not need to be upset about their penis length difference, rather than spend more effort to win the enchantment of women from other aspects. For the few patients who really need treatment for penis shortening, they should choose medication, physical therapy or surgery under the guidance of a specialist according to their age, medical history and physical condition. It must be reminded that the penis lengthening surgery currently carried out in hospitals is actually a reduction of the internal part of the penis so that the external part of the penis is lengthened, which means that the total length of the penis remains the same after the surgery. Patients with combined erectile difficulties should not easily undergo penile lengthening surgery to avoid worsening erectile difficulties after surgery. Recently, a lightweight penis lengthening device has been developed abroad to achieve certain results by carrying it around for six months.