The invention belongs to the technical field of snow removal equipment for removing snow on a road and spreading a snow-melting agent, and in particular to a vehicle-mounted multifunctional snow remover. The vehicle-mounted multifunctional snow remover comprises a vehicle cab, a snow removal shovel device, a vehicle chassis, a hydraulic pump station, a snow-melting agent spreader and a swing ventral shovel device, wherein, the swing ventral shovel device is arranged in the middle part of the vehicle chassis; an ice-breaking roller device is arranged in the front of the swing ventral shovel device, and a snow-sweeping roller brush device is arranged in the back of the swing ventral shovel device; the ice-breaking roller device consists of an ice-breaking roller chute, an ice-breaking roller slide rail, a spring seat, a spring bar, a spring, an ice-breaking roller and an ice-breaking roller lift cylinder; and the snow-sweeping roller brush device consists of a roller brush chute, a roller brush slide rail, a support plate, a support axle, a worm wheel, a roller brush frame, a roller brush assembly, a worm, a roller brush rotating-angle adjustment hydraulic motor and a roller brush lift cylinder. The vehicle-mounted multifunctional snow remover has the advantages of completing the four procedures of pushing snow, breaking ice, sweeping and spreading the snow-melting agent once, improving the snow removal effect, accelerating the snow removal speed and protecting the original asphalt pavement from damage.