PURPOSE: A mattress cover is provided, which is capable of diversification of the mattress and enables a user to select the mattress according to the taste. CONSTITUTION: A mattress cover(10) is constituted as follows. When a cover(30) covering the cushion element(20) forming a mattress is cut, each side cover located in each outer circumference of surface cover(31) is cut in order to be unified and is sewed in the state that is in contact with one side of the side cover by placing the cover in a space formed by side covers. A corner finished part is sewing processed according to the shape of the sewn part to make the side and edge of the mattress have various shapes.
