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. Also, the camera can be firmly inserted into a cap even without a connecting tool, and a fixed state can be maintained because of the wire. Also, the camera, the optical fiber, and the drug injecting tube can be easily connected and installed on the cap, and the cap can be easily separated because a front end of the wire is configured to be separable.
