The invention discloses a novel baby waterproof bib comprising a waterproof bib and all-cotton gauze. two fixing rope fixing frames are oppositely installed on an upper end of the waterproof bib; thefixing rope fixing frames are fixedly connected to the waterproof bib through thread stitching; two waterproof bib fixing ropes are respectively fixed on the top ends of the fixing rope fixing frames;the waterproof bib fixing ropes are fixedly connected to the fixing rope fixing frames through thread stitching; a collecting bag is installed on a front surface of the fixing rope fixing frames andthe collecting bag is connected with the fixing rope fixing frames through a zipper so that the collecting bag is detachable. By designing the collecting bag that is mounted on the waterproof bib, itis possible to collect food such as rice grains dropping from the baby's mouth when the baby is eating. By disassembling the collecting bag and cleaning the bag, food can be prevented from falling onthe ground during the meal, thereby reducing the mother's labor and reducing the burden on the mother.