Transdermal drug delivery device for the interface

Substantially uniformly and favorably drug from a plurality of projections provides a transdermal drug administration device interface that can be fed through the skin. The transdermal drug administration device interface includes a flat plate 8, the flat plate 8 has a plurality of conical or pyramidal projections 6 arranged to skin pierceable two-dimensionally, corresponding to the protrusions the drug is placed Te and a plurality of openings 7 can be transmitted. Each opening 7 is arranged close to the projections 6 and its corresponding. Flat 8 may be a metal or ceramic. The number and the ratio of the number of the projections of the opening is 1: 1 to 1: may be two.