Our research takes idolatry as modulating variable to explore the relationship between moral intensity, perceived risk and music piracy intention. The following are key findings: (i)The relationship of consumer moral intensity and the intention of downloading unauthorized music is not significantly; (ii)Perceived risk has significant effect on the intention of downloading the unauthorized music files; (iii)The moderating effect is partial significantly to the relationship among moral intensity, perceived risk and the music piracy intention.