That philosophyis the essence of era spirit is not the proposition of Marxism and is the proposition when Marx stayed at youth Hegelism period and directly comes from the though of Hegel.This proposition is not only a kind of historic outlook of idealism but also is an old philosophical outlook.This proposition believes that philosophy is the highest wisdom,the highest science and the highest truth and can replace other science to solve practical problems.Marxism philosophy realized basic reform in philosophical outlook and believes that philosophy is the theory of world outlook,can only solve the problem in recognizing general essence of the world and can not solve the problem in recognizing other affairs and things.Philosophy,as world outlook,is only a department of practical science,can not outstrip other sciences but coexists and intrtacts with other sciences.Marxism philosophy is scientific world outlook and provides correct thinking mode for the people to recognize the world and to change the world.