What is the cause of addiction to alcohol? Which is more directly related reason between the chemistry and environment. Most people think that the toxicity of alcohol is too strong and they cannot stop drinking once they addicted to alcohol. But many alcohol addicts are drinking becasuse of pressure and stress from their social environment. According to psycological experiment main factor to influence people into alcohol is not chemistry but environment. The toxicity of alcohol is not strong as much as we are afraid. We have been lack of research for what make people addicted to the alcohol. And that’s why we don’t know about the properties of alcohol addict and we are scare too much. If we want to solve the problem we should know about it correctly.