PURPOSE: A camera module is provided to minimize the foreign material existing in the inner structure of a housing by combining a step difference projection formed in the housing with a step difference groove part formed in the edge of a printed circuit board. CONSTITUTION: The camera module includes a printed circuit board and a housing. The printed circuit board(100) has an image sensor(500) and a step difference groove part(100a) of stair shape. A housing(400) is installed on the upper part of the printed circuit board and has a step difference groove part of stair shape and a step difference projection(400a) corresponding to the step difference groove part in the bottom surface the housing(400).
