Motor liquid cooling system and motor

The invention discloses a motor liquid cooling system and a motor, and relates to the technical field of motors. The oil cooling device comprises an oil cooling outer attached shell, and a spiral pipe cavity used for being filled with oil is formed in the oil cooling outer attached shell; the circulating pipelines are distributed in a circumferential array mode along the oil-cooling outer attached shell, the two ends of each circulating pipeline communicate with the two ends of the spiral pipe cavity correspondingly, a pressurizing frame is installed in the middle of each circulating pipeline, and a driving part used for driving the pressurizing frames to operate is installed in the oil-cooling outer attached shell; and the water-cooling external attached shell is mounted on the outer side of the oil-cooling external attached shell in a wrapping manner. According to the invention, a layer of water-cooling external shell is additionally wrapped on the oil-cooling external shell, oil is used as a medium to rapi