The universe is home to various events, some of events are called evil. Humans inevitably face these unfortunate events. Some of these events are not a disaster in themselves; But human collisions with them hurt. Some of those events are among bens and the causes bens. Others, in terms of moral laws, are the most extreme evil events that are considered human evils. These two questions now arise: First, what is the place of this evil in the system of existence and what is it? Second, what is the method of dealing with such harmful events? In answer to the first question, the best system must be described and the existence of good and evil in it must be examined; A system that has two parts: first, the all-encompassing and general part, which in its entirety has the facilities of successive the best. Second, the special part in which the evils are equal to the good and evil aspects of the world. Evil falls into two categories: first, natural evil, and second, voluntary evil. In answer to the second question, we will have two stages: first, the pre-evil stage and second, the post-evil stage. In the first stage, three factors will result: prudent and pleasing action, choosing a good method and outcome, and asking God for happiness. In the second stage, the principles of morality and the principles of pure conduct must be Ahead on the way of man.