Power is defined as the ability an individual possesses to change the state of others by giving or withdrawing resources and imposing punishments. Because those with power control resources and have decision-making power that is closely related to the public interest, social scientists and the public have long been interested in how power affects morality. This book conducts in-depth research and discussion on the topic of how power affects moral decision-making. The book first reviews and summarizes previous scholars theoretical and empirical research on power and moral decision-making, and on this basis puts forward the theoretical mechanism of power affecting moral decision-making, and then explores and demonstrates the relationship between power and moral decision-making in detail through ten empirical studies. relationship, and explored the mechanism of cognitive style, goal orientation and other factors in it.