PROBLEM TO BE SOLVED: To provide a wheelchair caster support fixing member capable of improving workability in a caster attachment work and also reducing a work cost and a manufacturing cost.SOLUTION: A body part 22 fixed to a wheelchair main body frame via a fixing mechanism, an outer cylinder part 23 connected to the body part 22, an inner cylinder part 24 arranged inside the outer cylinder part 23, and a rubber-made elastic part 25 held between the outer cylinder part 23 and the inner cylinder part 24 are integrally molded. The rubber-made elastic part 25 is thermally welded with the outer cylinder part 23 and the inner cylinder part 24. Thus, a damper function is obtained to thereby eliminate necessity of separately attaching a damper member. Consequently, when a caster is attached, a work process is reduced so as to achieve the improvement of workability and the reduction of a work cost.SELECTED DRAWING: Figure 3