A method of producing a catheter tube allows a plurality of catheter tubes to be continuously produced using a common core rod, with a proximal end connecting part efficiently attached. The method involves: forming a tubular body on the core rod including an inner layer covering body and an outer layer covering body； attaching a proximal end connecting part, forming a cylindrically shaped hub to a proximal end of the catheter tube, to a radially outer side of the inner layer covering body and the outer layer covering body； severing a tubular continuous body obtained on the core rod is severed at a given position after the proximal end connecting part is attached to produce a plurality of single tubes, each of which is provided with one of the hubs； and removing the core rod from the single tube.
