Postpartum mothers face many problems that need to be repaired, such as physical decline, skin aging, stretch marks, wound healing, constipation and so on. Fructooligosaccharides can ferment in colon to produce sports fatty acids, promote intestinal peristalsis and improve postpartum constipation. Wanchu Bird's Nest Collagen Oral Liquid contains bird's nest, collagen peptide and fructooligosaccharide, which is helpful to improve skin elasticity, build wrinkles and promote wound healing.