The invention discloses a haze-proof nose insertion respiration helmet. The haze-proof nose insertion respiration helmet comprises a helmet shell body and a transparent cover, wherein the transparent cover is hinged to two sides of the helmet shell body; a first sleeve and a second sleeve are arranged on the front surface of the helmet shell body; front-end openings of the first sleeve and the second sleeve are internally provided with column-shaped filtering cotton; hoses, which extend into the helmet shell body, are arranged at rear ends of the first sleeve and the second sleeve respectively; insertion heads are arranged at tail ends of the hoses respectively; thread sleeves are arranged are arranged at two sides of the front end of the first sleeve and the second sleeve; the two thread sleeves are connected through a thread rod. With the adoption of the haze-proof nose insertion respiration helmet disclosed by the invention, a wearer can insert the insertion heads into nares and inhaled air is filtered by utilizing the column-shaped filtering cotton, so that particulate matters are prevented from entering a respiratory system, and furthermore, influences of haze on health are reduced; the haze-proof nose insertion respiration helmet is convenient to wear and has a wide applicable range.