The present invention relates to a production method comprising: extruding a balloon member used for a catheter, a balloon member used in the catheter according to the present invention, the extruded material for use as a balloon exterior inner tube, respectively; Aging step of aging in an incubator at a predetermined temperature to increase the durability of the material extruded from the extrusion stage; Each step of cutting material from the cut to the aged aging step to a predetermined size of the balloon, exterior, inner tube; Washing step for washing the balloon exterior inner tube cut in the cutting step; The welding step of welding the balloon exterior inner tube washing in the washing step; Includes; forming and shaping to help you remember the balloons, appearance, shape into the inner tube to inflate the balloon molding jig welded by the welding step. Accordingly, it is possible to provide a balloon member used for the durability improved catheter.