An electronic device including a housing including a first plate, a second plate, and a side member enclosing a space between the first plate and the second plate; and a camera structure disposed at a space at a periphery of the side member. The camera structure includes a camera housing structure disposed between the first plate and the second plate; at least one image sensor disposed in the camera housing structure; and at least one lens disposed inside the camera housing structure between the at least one image sensor and the first plate and facing the first plate. The camera housing structure includes a side surface facing the side member and having a first stepped structure when one surface of the side surface is viewed from the outside. The portion of the side member has a second stepped structure formed to correspond to the first stepped structure.