Abstract: Modernity is represented by the dual dimensions at the levels of social structure and cultural psychology， and the moral dilemma of modernity is unfolded in the two dimensions. The modernity at the social structure level emphasizes rationalism， leading to moral neutrality and moral freedom， and the modernity at the cultural psychology level stresses sensory principles， resulting in moral emotionalism and value individualism. Rational ethics and virtue ethics interpret the moral dilemma of modernity from reason and moral respectively， but both only cling to one aspect of the truth. The construction of modern moral system of normmoralvirtue is a coordination and transcendence of the two， which emphasizes rational moral norms internalizing individual morality and individual morality externalizing individual behaviors in the social life.

Key words: modernity, moral dilemma, moral system