According to an embodiment of the present invention, a knock-down case for a portable terminal is provided. The case comprises: a rear surface part for covering the rear side of the portable terminal; a side surface part symmetrically formed on both sides of the rear surface part and covering the side surface of the portable terminal; and an engaging part formed on upper and lower sides of the rear surface part and coupled to an upper end part and a lower end part of the portable terminal. At least one incision part is formed along the boundary of the engaging part and the rear surface part, and the upper end part and the lower end part of the portable terminal are inserted through the incision part, so as to be coupled with the engaging part.;COPYRIGHT KIPO 2017
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