The present study aimed to explore the effect of the attribution and judgment of responsibility on implicit stigma against mental illness.A sample of 61 college students was recruited in the present study.The current study used SC-IAT，the attribution and judgment of responsibility of mental illness questionnaires to examine their predicting effects toward implicit stigma.There is a significant implicit effect in our study；the attribution of mental illness（mental attribution and interpersonal attribution）and responsibility judgment（individual responsible judgment）were significantly associated with implicit stigma；Individual responsible judgment was predictive factor of implicit stigma，and interpersonal attribution mediated this relationship.Participants have implicit negative attitudes toward mental illness，and individual responsible judgment can predict the implicit stigma against mental illness.