The present invention relates to a flexible-tubed structure of an endoscope comprising a plurality of cylindrical units, a first wire, a second wire, a first flexible unit, and a second flexible unit. The wires respectively pass through the cylindrical units. The flexible units are continuously disposed at the recesses of the cylindrical units. The cylindrical units are used to form a tubular unit by the flexible units. The tubular unit is bent by the tension of the first wire or the second wire to control the turning-direction of the camera apparatus.