There is provided a photoelectric conversion module in which an optical device and an optical waveguide are arrayed in a horizontal direction, thereby improving the optical coupling efficiency and therefore, reducing light loss. To this end, the present invention provides a photoelectric conversion module comprising: a printed circuit board; an integrated circuit board mounted on the printed circuit board, wherein an optical waveguide array is positioned within the integrated circuit board so as to pass from one side to the other side of the integrated circuit board, and first and second electrode pads are positioned at one sidewall of the integrated circuit board; an optical device array wherein first and second electrode bumps to be respectively connected to the first and second electrode pads are positioned at one sidewall of the optical device array facing the integrated circuit board and an optical device is positioned in a middle part of the optical device array; and a semiconductor chip mounted on the is integrated circuit board.