There are two major causes of erectile dysfunction, one psychogenic and one organic. Then both psychogenic and organic are present, and over time, a mixed type is formed. In fact, most of the erectile dysfunction is a mixed type. The main psychogenic is that the person’s first sexual experience is very important to him, and if the first sexual experience fails, then it will produce a lot of pressure on his psyche. This is also an aspect of the relationship between husband and wife is not harmonious, the thought is not concentrated, this is also an aspect. There is also the lack of knowledge about sex, fear of pregnancy, moral questioning of premarital sex and other mental conflicts. In addition, a certain sexual frustration leads to psychological shadows, as well as female uncooperative, too strong, etc., can also lead to erectile dysfunction. The main organic factor is that something is really wrong with the body, it is due to disease that leads to reduced libido and sexual excitement. Erectile function is a sign of a man’s physical health. Young people have very good erectile function, which slowly declines as they age. ED is an early manifestation of a chronic disease and shares the same risk factors as chronic disease. There are similarities and differences with the site of ED occurrence, which is obesity, physical obesity, have cardiovascular disease, erectile dysfunction risk is greatly increased, these three are interlinked. Once the ED appears, often means that other parts of the body also appear lesions, such as hypertension, hyperlipidemia, diabetes, atherosclerosis and other chronic diseases. ED treatment preferred oral medication for ED treatment, Professor Wu said, ED treatment has a first-line treatment, second-line treatment, third-line treatment. First-line treatment is oral drug therapy. Second-line treatment is intraurethral drug delivery, local injection plus vacuum negative pressure. Third-line treatment is implantation of a prosthesis, for patients with severe disease. Today, the preferred treatment for ED is oral medication, there are currently three drugs for ED in the domestic market, one is cialis, one is vardenafil, and sildenafil. These three drugs have their differences, “citrine” is cialis, Viagra (sildenafil) is blue, called “sapphire”, because they are different colors. This sildenafil, food has an effect on its absorption, it works faster and is short-acting. The effect of cialis is 36 hours, even to 72 hours, we sometimes call it “long-acting Viagra”, after eating it can be repeatedly tried within 72 hours, and moderate drinking, eating does not affect it, this is its advantage. The first thing is to take the ED medication on demand, short-acting that is to take it on demand, just like eating fast food, you need to eat one, and then go to finish once. Long-acting cialis, do not consider so much time, such as taking one on the weekend, two days on the weekend can try, so it has no time concerns, very natural, can make a man very confident, others can not see you take the drug. Now there are also small doses of the drug that can be taken several times, which can be used as a regular medication, just like high blood pressure medication, in small doses, take one a day, not affected by alcohol and high fat diet, 365 days of safe and stable efficacy, provide uninterrupted protection, work at any time, and get an erection that returns to the instinct.