As a hot topic in moral psychology research, moral judgment - a cognitive process that contains a large amount of emotional components, and the role of emotions in the construction of moral judgment is increasingly valued. Specifically, an increasing number of studies have confirmed that emotional regulation has an impact on cognitive processes such as memory and attention. The comprehensive research results indicate that emotion regulation strategies can have an impact on the judgment of unethical behavior, lowering the criteria for judging unethical behavior. The degree of impact of different emotion regulation strategies varies.