An end portion of a signal cable is fixed to the inside of a rear end of a connecting member by a first adhesive material. A flange of a lens barrel is engaged to a pair of claws of the connecting member. The signal cable is connected to the lens barrel through the connecting member so that the signal cable is not peeled from a flexible substrate. The connecting member does not cover a CCD and a first tip of the flexible substrate. The diameter of a distal portion of an electronic endoscope can be made smaller by eliminating the thickness of the connecting member and the thickness of the adhesive material filled between the connecting member and the CCD.