To provide a method of manufacturing an upholstering structure for furniture which has a prescribed strength and allows to make a configuration with three-dimensional, curved surfaces simply and at a lower cost.

Cuts 21 are provided on a flexible flat-shaped sheet 2. A laminate sheet 1 formed by stacking a plurality of sheets 2 with an adhesive 3 applied between them is put on a male mold 5. The laminate sheet 1 is molded to follow a mold surface 51 of the male mold 5, while causing displacements between the sheets 1, 1. The adhesive 3 is hardened, and the laminate sheet 1 is formed into a three-dimensional configuration.