Noise-reducing silent range hood and smoke discharging tube

A noise-reducing silent range hood and a smoke discharging tube. Pipe seats (62) on the upper and lower ends of the smoke discharging tube are connected by a hollow elastic telescopic helix tube or a corrugated tube (63). An inner wall of the elastic telescopic helix tube or corrugated tube (63) is provided with a sound-absorbing material. The surface of the sound-absorbing material is provided with fine holes (64) at a certain distance from each other. A sound-absorbing cavity (65) is formed between the fine holes (64) and the troughs of the elastic telescopic helix tube or corrugated tube (63). A sound-insulating layer is filled between the elastic telescopic helix tube or corrugated tube (63) and an inner wall of a shaping shell (61). The range hood can disperse sound waves and reduce the noise in operation.