The invention belongs to the technical field of textiles, and particularly relates to a soft, glutinous, comfortable and elastic skin-fitting underwear fabric. The underwear fabric is of a knitted double-rib stitch structure and is formed by weaving spandex and regenerated cellulose fibers or blended yarns containing the regenerated cellulose fibers, the blended yarns comprise the regenerated cellulose fibers, cotton fibers and/or acrylic fibers, and the proportion of the regenerated cellulose fibers in the blended yarns is not lower than 75%. In order to improve the wearing comfort of underwear and increase the added value of the product, the whole-process combined process design is carried out from selection of fiber raw materials, the spinning process and the texture structure design tothe printing and dyeing raising process, the prepared underwear fabric has soft, smooth, glutinous, fluffy, comfortable and elastic hand feeling, the material is skin-friendly and comfortable, the wearing comfort of the underwear can be greatly improved, the underwear fabric is obviously distinguished from a common fabric in style and hand feeling, and the product is light, soft, comfortable, elastic, free of constraint and suitable for being used as a garment fabric of underwear in spring and autumn.