Erections have long been a major marker of men’s self-judgment as “manly enough” and a “fuel” for their self-confidence, but seemingly unrelated to diseases such as heart disease and diabetes. 62.8% of people believe that coronary heart disease affects men’s erectile function, and erectile dysfunction (ED) is a sign of declining overall male health. ED is a “weather vane” for men’s health, especially for middle-aged and older men, who should be especially alert to the possibility of chronic diseases, especially cardiovascular disease, when ED occurs. When asked “which chronic diseases affect men’s erectile function”, 62.8% chose coronary heart disease, 54.8% for hyperlipidemia, 47.9% for hypertension, and 39.0% for diabetes. In response to the question “Which medications affect erectile function in men”, more than half of the doctors surveyed chose lipid-lowering and coronary heart disease medications, followed by anti-hypertensive medications, diabetic medications and antidepressants, respectively. ED and many chronic diseases share the same pathogenesis: In the past, many people did not realize that poor erection was a physical disease, and few even among physicians would consider erectile dysfunction (ED) as a sign of declining overall health. In recent years, however, new research has continued to confirm that ED and chronic disease are closely related and share a common pathogenesis with each other. In the case of coronary heart disease, ED and it share many of the same risk factors, such as age, lipid metabolism disorders, smoking, sedentary, and obesity. Among them, impaired vascular endothelial function, resulting in decreased vasodilation, is the main cause of vascular ED. And cardiovascular disease is also precisely from the decline in endothelial function, causing functional and structural changes. Therefore, from this perspective, ED and cardiovascular disease are actually “homologous”. In addition, an Austrian health surveillance program assessed the risk of coronary heart disease or stroke in 2,651 men over 10 years and found that those with moderate to severe ED at the start of the study had a 65% increased relative risk of coronary heart disease and a 43% increased relative risk of stroke. Therefore, when middle-aged and older men develop ED, they should be especially alert to the possibility that various chronic diseases, especially cardiovascular disease, may ensue. Satisfactory erection = hardness + duration. The survey also showed that doctors have a new understanding of ED itself. For example, when asked whether “ED is a disease or a symptom in men with chronic diseases,” 51.6 percent of the doctors surveyed chose “a disease. In the question “What factors are most helpful in improving the overall satisfaction of sexual life for ED patients and partners,” 59.8 percent of doctors said that “hardness and erection maintenance time” were equally important. The medical definition of ED includes three levels: 1) the ability to obtain an erection of sufficient hardness; 2) the ability to maintain that erection until sex is complete; and 3) the ability to have a satisfying sex life. ED is not only a man’s “lower body” problem, erection is not good, it must be the body which part of the failure, so it must be recognized as a disease, rather than the old people understand the “performance of aging”. The results of the survey concerning the average erection duration are basically consistent with foreign studies and are representative. For example, 18.2% of doctors believe that the average erection duration of healthy people should be around 5 minutes; 47.6% believe that it should be around 10 minutes; and 34.2% believe that it should be around 15 minutes. In contrast, in foreign surveys, the average erection duration of healthy people is 5 to 12 minutes. From the comparison of erection time, it is easy to see that there is a large gap between ED patients and normal men, which is likely to become an important reason for depriving them of sexual happiness and making it difficult for couples to have a satisfactory sex life. The emphasis on hardness and maintenance time is precisely because of the inseparability and indispensability of these two points for a satisfying sex. For the standard treatment of ED, in a recent health male forum and ED diagnosis and treatment pathway seminar, some experts suggested that ED treatment must pursue maximum effect, comprehensive consideration of the comprehensive needs of ED patients, namely hardness and maintenance time should be taken into account.