Realize of the circumstances and cause originated ideologies. To find out the most important doctrines and intellectual trends prevailing in the contemporary era and the most important methods and means of the enemies of Islam in the fight against Islam. To acquire the ability to reject similitude stated that the reason for development in the western is the introduction of the intellectual trends and renounce religion. Gain skill to criticize of those trends and deviant thoughts and respond to them. To realize the failure for the intellectual, moral and social collapse in the West is turning away from the true religion and replacing it with doctrines and intellectual trend deviants. Parking students on the reasons of collapse of these doctrines one by one, and the consequences of these trends.