Auxiliary tool for filling expansion pillow inners

The utility model discloses an auxiliary tool for filling expansion pillow inners. The auxiliary tool is characterized by comprising a left half ring and a right half ring. The lower end of the left half ring is connected with the lower end of the right half ring by a hinge pin, and the upper end of the left half ring is fixedly connected with the upper end of the right half ring when the auxiliary tool is used. The auxiliary tool has the advantages that the auxiliary tool is provided with two half ring structures, intersections of the lower ends of the two half rings are connected with each other by the hinge pin, the upper ends of the two half rings are fixed according to working requirements when a contraction space of the two half rings meets the requirement of a preset value, accordingly, a pillow inner can be manually placed in a region formed by the two half rings when the expansion pillow inner needs to be filled, the region is positioned corresponding to the two-thirds of the length of the expansion