Abstract: The two theories on human liberation by Marcuse and Marx are greatly different due to their philosophical stands,the former basing his theory on metaphysics and the latter on ontology.Marcuse,interpreting Marx’s theory from the happy principle of psychological point,regards that his Eros theory has deepened Marx’s theory on liberation movement.However,his theory is nothing but a degradation of Marx’s theory.

Key words: liberation of Eros, liberation of sensibility, Marcuse, Marx