The invention discloses an outdoor rain-proof numerical control carving device which comprises rollers, a numerical control machine and a filter net. A bottom plate is embedded into the upper ends ofthe rollers, and the upper end of the bottom plate is connected with a first sliding rail. A first sliding block is embedded into the upper end of the first sliding rail, a steel frame is fixed to theupper sides of the two ends of the first sliding rail, and a first draught fan is arranged in the middle of the lower end of the steel frame. A ventilating pipe is arranged on the left side of the first draught fan, and an air inlet pipe is mounted on the right side of the first draught fan. A filter tank is mounted at the lower left end of the steel frame, and sound insulation cotton is fixed tothe inner wall of the steel frame. A second sliding rail is connected to the middle of the inner wall of the sound insulation cotton, and a second sliding block is mounted at the upper end of the second sliding rail. The numerical control machine is mounted on the inner wall of the upper end of the steel frame, and the upper end of the right side of the steel frame is connected with a hand rest.The outdoor rain-proof numerical control carving device is provided with the rollers, moving of the whole device can be controlled easily, moving through manpower in the past is substituted, and a large amount of manpower is saved accordingly.