Viagra is the drug of choice for the treatment of erectile dysfunction (ED). It is taken on demand before sex and its effect lasts for about 4 hours. With the widespread use of Viagra, more and more men with ED have been treated effectively. As a doctor, I am happy from the bottom of my heart for them to enjoy “sexual happiness” again. However, I have also encountered individual patients who are reluctant to use Viagra, one of the main reasons is that they often ask for a “magic pill” that can cure ED completely. In fact, this idea is unrealistic for most ED patients. To explain this problem need to start with the etiology of ED. According to the cause of ED can be divided into psychological, organic and mixed three categories. Organic ED can be divided into arterial, venous, neurological, endocrine, etc. In the past, psychological ED was considered the most common, and now it is believed that organic factors account for more than 80% of all patients with ED. If the patient is purely psychological ED, typical cases such as newlyweds with unsatisfactory sex life, or young and middle-aged men occasionally have erectile insecurity and worry, and later a vicious cycle, the more anxious the worse erectile function, through the use of Viagra to break the vicious cycle, can achieve a complete cure. Most patients, especially middle-aged and older men, often have organic factors, the most common being atherosclerosis. People develop microscopic atherosclerosis after the age of 30, but not all of them develop clinical disease. The erectile tissue —- of the penis is actually an arterial-venous system, and atherosclerosis is the most common cause of ED. New research has concluded that ED and cardiovascular disease share common risk factors, such as diabetes, hyperlipidemia, and smoking, as well as the same early pathophysiological changes. In other words, coronary heart disease, hypertension, cerebrovascular disease and ED have common causative factors, the same lesions, only the occurrence of different sites. The clinical consequences of atherosclerosis in patients, such as occurring in the heart that is coronary heart disease, occurring in the brain that is cerebrovascular disease, occurring in the peripheral small arteries that is hypertension, occurring in the penis that is ED. some patients first have hypertension, coronary heart disease, followed by ED, there are many patients in the 30-40 years of age after the first erectile function gradually decreases. Therefore, young people appear gradually aggravated ED to be alert to the emergence of atherosclerosis, and take positive health measures in a timely manner. In short, ED actually has the same pathogenesis as many of the chronic diseases mentioned above, and there is no cure for the same. Doctors let hypertension, coronary heart disease patients take medication every day, they generally do not have a problem, “no medication which can be?” . In fact, hypertension, coronary heart disease drugs are also to control the development of the disease, to prevent or delay the emergence of comorbidities, not to “eradicate” the purpose. The same is true for the treatment of ED. Before the introduction of Viagra, there were very limited safe, effective, and convenient ED treatments available to physicians. The advent of Viagra was an epoch-making contribution, and in fact a boon for ED patients. It is the sacred mission of doctors to conduct in-depth research and discover ways to “cure” atherosclerotic disease and even ED, and we are confident that this goal will be achieved. However, for the time being, I still recommend that the majority of ED patients face the reality, as soon as possible to use the appropriate treatment for themselves, to enjoy the happiness of the near future.