A smart self-repair device and method of self-repairing a package is disclosed. The smart self-repair device may include a fuse array configured to store information regarding respective bits of a fail address in fuses. The smart self-repair device may include a self-repair control circuit configured to control repairing of not only a target mat in which a fail occurs, but also adjacent upper and lower mats sharing a sense amplifier along with the target mat, and to output fail address information corresponding to a fail mode, and row fuse set information or a column fuse set information. The smart self-repair device may include a data control circuit configured to output repair information to the fuse array based on the fail address information and the row fuse set information or the column fuse set information, and may include a control circuit configured to control a rupture operation of the fuse array.