Based on attribution theory and regulatory focus theory, this paper discusses the influence mechanism of cause-related marketing on customers’ extra-role behavior and the moderating effects of customer promotion focus and customer prevention focus. The results show that egoistic cause-related marketing (ECRM) has a negative impact on customer extra-role behavior, while altruistic cause-related marketing has a positive impact on customer extra-role behavior. Customer promotion focus has a significant positive moderating effect on the negative impact of ECRM on customer extra-role behavior; customer (...) promotion focus also has a significant positive moderating effect on the positive effect of altruistic cause-related marketing on customer extra-role behavior. There is a significant negative moderating effect of customer prevention focus on the negative impact of ECRM on customer extra-role behavior, while there is a significant positive moderating effect of customer prevention focus on the positive impact of altruistic cause-related marketing on customer extra-role behavior. (shrink)