Abstract: The seismic popular science propaganda shows relatively strong characteristics in Social property, scientific property, practical property, comprehensiveness and effectiveness.As one kind of information, it should pressent a substantive content suitable to the public psychological demand based on scientific factors and according to its own special law.This paper, using systematic theory, psychology and information theory, tried to probe into the law of social propaganda work of earthquake prevention and hazard reduction in information propaganda, feedback and its scientific management, proposing how to raise the social propaganda function of seismic science further and serve the construction of four modernizations better.