Abstract:In order to effectively prevent personal and major equipment accidents caused byelectrical equipment malfunction and improve the substation equipment reliability，error lockout prevention systemis designed by using iris technology．Iris codeis generated with the captured iris images and stored into the data base system．When preventing error lockout and match with iris code which is save din the data base，it can achieve the veri fication of the iris． Practice proves that the design and implementation of the power anti-mislock system based on iris recognition improves the accuracy and timeliness of authentication.