First, the factors that cause ED most of all have two types of etiology, namely psychological and organic. In the daily male function clinic, many people will have such questions: “Why I can not?” This is an inescapable and headache, and is not linked to physical fitness, and then the tough men, this ED is also said to come. At the bottom, there are two main types of factors: psychological and organic, sometimes a mixture of the two, and a domestic literature mentioned: after the age of 50 years old men, organic factors more up to 80%. At present, there are also many ED can not find a very clear cause, clinically known as primary ED. Psychological ED is often generated after the patient has had several failed sexual experiences, both confused and anxious, in the psychological entanglement of self-blame or guilt. This is a time when men are in great need of help from a professional doctor or psychosexual coach. But many people will feel embarrassed, lack of courage to seek help, they hope to rest for a period of time or eat some supplements to solve the problem, but often contrary to expectations, if coupled with the complaints of sexual partners, it is easy to appear afraid of sex, psychological ED followed. Second, organic ED is obviously related to organic diseases bad eating habits, bad habits, certain diseases, long-term use of certain drugs, etc. can bring burden and even damage to the blood vessels, sometimes the damage to the large blood vessels have not yet been exposed, but let the penile vessels to ED performance preempted. In addition, such as external genital malformations, penile vascular or neuropathy, trauma or major pelvic surgery, etc., can also have a direct impact. While primary ED has not been reported in scientific studies for clear and definite reasons, it may have both cardiovascular or endocrine problems, as well as problems with men’s overall health status, such as lack of sleep and excessive mental stress. In addition, some lifestyle habits can have an impact on erectile function: first of all, smoking, the nicotine in cigarettes can have an impact on cardiovascular and penile blood vessels. The earlier you quit smoking, the greater the likelihood of ED recovery, but also greatly reduces the difficulty of treatment. Alcohol is also closely related to ED, long-term heavy drinking, alcohol will inhibit the central nervous system, which leads to the occurrence of ED.