Elastic waist lining and elastic trouser waist

The utility model discloses an elastic waist interlining which is of a weaving structure of warp and weft, the warp is elastic yarn and comprises a waist edge part, a thinning part and a middle waist part which are sequentially arranged side by side in the weft direction, the waist edge part, the thinning part and the middle waist part extend in the warp direction, and the thickness of the thinning part is smaller than that of the waist edge part and that of the middle waist part. The elastic waist lining is provided with the thinning part, so that the problem of uneven sutures at the suturing part is effectively solved, and the problem that the sutures are easy to break due to overlarge stretching in the use process is effectively prevented; and the lamination flatness between the fabrics at the sewing part is further improved. The utility model further discloses an elastic trouser waist. 本实用新型公开了一种弹性腰衬，为经纱和纬纱的编织结构，经纱为弹性纱，包括沿纬向依次并排的腰边部、减薄部和中腰部，腰边部、减薄部和中腰部沿经向延伸设置，减薄部的厚度小于腰边部和中腰部的厚度。弹性腰衬通过设置减薄部，有效改善缝合处缝线不平服的问题