Terrorism has developed a phenomenon of insecurity feeling by creating fear and terror among sinless people around the world. Actually, what is terrorism? What factors are more effective in augmenting? The use of violence and aggression is a basic component definition of terrorism. Thus, an exact understanding involves recognition of aggression expression and using violence. The presence of psychological problems such as eschizopherni, paranoid and… also disorders for meeting human needs has been caused violence feeling speed and begun a dreadful events. A systematic psychological analysis shows that some terrorism events is the cause of problem and disorder in terrorist person by improving it we will see fewer events in the situation for terrorism.