Biodegradable baby quilt with high warmth keeping property

The invention relates to a biodegradable baby quilt with a high warmth keeping property and belongs to the technical field of high molecular materials. The biodegradable baby quilt with the high warmth keeping property comprises shell fabric and filler. The shell fabric is formed by blending 70-90wt% of polylactic acid fibers and 10-30wt% of alginate fibers. The filler is made of polylactic acid short fibers containing 5-15wt% of alginate carbon. The polylactic acid fibers and the alginate fibers are combined ingeniously, and therefore the biodegradable baby quilt is good in hydrophily, biocompatibility, antibacterial activity and comfort level. The quilt is suitable for a baby, the shell fabric and the filler are adjusted and designed, the 10-30wt% of alginate fibers are introduced into the shell fabric, and therefore a hydrophilic property of the shell fabric is improved; alginate carbon ingredients are introduced into the polylactic acid short fiber filler, the short fibers have a far infrared ray release function, and therefore the warmth keeping property of the baby quilt is greatly improved.