The present invention relates to a mobile phone case to protect portable terminals including smartphones, iPads, or iPhones. The mobile phone case comprises: a cover which surrounds the edges of a mobile phone screen and which has an opened hole exposing the screen outside, and multiple connection plates extended backwards by protruding from three edges; a rear side member which has a board type structure and which is positioned in parallel with the cover in the back side of the cover; and an adhesive part which has a remover adhesive to attach or detach the connection members in the rear side of the rear side member. A mobile phone insertion part is formed between the cover and the rear side member by attaching or detaching the connection plates at the rear adhesive part. The kit type fabricated case is comprised to keep a mobile phone in the mobile phone insertion part.