A preparation for transdermal or transmucosal administration for electroporation is provided that enables efficient administration of a compound to be administered such as a drug. The preparation for transdermal or transmucosal administration for electroporation includes a drug reservoir (11) having dispersed therein a compound to be administered (physiologically active substance), such as a drug, in a base of a solid or semisolid form, a backing (12) retaining the drug reservoir, and a pair of electrodes for electroporation (13) provided on the drug reservoir (11). An adhesive layer (14) is provided on a flange portion of the backing (12). An insulating layer (15) is provided on at least a section of the electrodes for electroporation (13) contacting an application site other than a section on the drug reservoir (11).