A detachable interior decoration material is provided to cut down the cost required for interior construction by using pre-manufactured interior materials. The invention relates to a detachable interior decoration material for partitioning the indoor space beautifully by press-fitting pre-manufactured interior decoration materials, which contains a rectangular frame(11) having at least one or more concave slide grooves, a retreated part(13) inserted to the slide groove and provided with plural grooves on the inside diameter, an insertion part(14) having a T-shaped head and provided with plural grooves on the outside diameter correspondingly to the retreated part, and an exterior part(15) having a concave slide groove is inserted to the T-shaped head of the insertion part.
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