The invention discloses a novel bridge pier anti-collision device with cushioning function, comprises an outer fixing plate and an inner fixing plate, the inner fixing plate is located at the inner center of the outer fixing plate, and a biomass buffer layer is fixed between the inner surface wall of the outer fixing plate and the outer surface wall of the inner fixing plate, The inner surface walls of the outer fixing plate and the inner fixing plate are fixed with clasps, the clasps are divided into a child clasp and a female clasp, the inner surface walls of the child clasp are symmetrically provided with a clasp slot along the horizontal direction, one side of the female clasp is symmetrically fixed with an insertion rod along the horizontal direction, and the inner parts of the two insertion rods are fixed with a first telescopic spring; The anti-collision device made of metal material can be protected from corrosion by spraying protective coating on the external fixing plate, andthe protective coating can remind the passing vehicles to avoid concession at night, so as to prevent the vehicles from installing the bridge pier because the bridge pier is invisible at night and thus causing traffic accidents.