The present invention relates to a catheter using an optical fiber and a camera, into which the camera for lighting and the optical fiber for lighting are built so that the camera can be used during an internal examination and treatment amid irradiation of light by the optical fiber. According to the present invention, the diameter of a shaft can be minimized while forming a hole in the shaft for the camera, the optical fiber, a wire, and medicine to be inserted, and the camera, the optical fiber, and a distal end of a medicine injection tube are driven at the same time and in the same manner following the driving of the wire so that internal imaging, light irradiation, and medicine injection can be performed with accuracy.