The invention discloses a floating two-way multipoint bearing wheel applied to an urban rail vehicle sliding door. The floating two-way multipoint bearing wheel comprises a bearing bracket, two vertical bearing wheels, a bearing shaft and a horizontal bearing wheel, wherein the bearing shaft is arranged on one side of the bearing bracket, and embedded in the center of the bearing bracket, the two vertical bearing wheels are arranged symmetrically at the end parts of the bearing bracket, and the horizontal bearing wheel is arranged on the upper surface of the bearing bracket. By adopting the floating two-way multipoint bearing wheel applied to the urban rail vehicle sliding door, the problems of poor bearing capacity and lack of horizontal loading of the original one-way bearing wheel are solved, the noise is reduced, and the stable product quality is realized. A plastic alloy wheel bearing wheel shell of the bearing wheel and a bearing shaft sleeve are formed by integral injection molding, so the lubrication grease of the bearing wheel is stable in performance. An inner and outer double-layer dust cover sealing is adopted, so the invasion of dust and impurities can be prevented, and the service life of the bearing wheel is prolonged.