The Unified Utilitarian Theory established by C. L. Sheng is a criticism, succession and innovation of the classical utilitarianism, and is largely in alignment with the frontier research of modern economics on "social dilemma" and "social preferences", and also of modern ethics on "is" and "ought". Its paradigm of "moral satisfaction" is based on criticism of the traditional utilitarianism, and generalizes the maximizing method in economics into a model to analyze human behaviors as a whole, including the analysis of moral behaviors and altruism, such that offers significant enlightenments and inspirations to the solution of the crisis of the logical system of modern economics.