Outdoor cap with prevent haze function

The utility model relates to an outdoor cap with prevent haze function, including the cap body, the brim of a hat and the setting that can enclose in brim of a hat lower end being used for cover facial flexibility and prevent the haze layer, the flexibility is provided with two -layer active carbon filter layer in preventing the haze layer, crosses the filter pulp for the one deck between the two -layer active carbon filter layer, power and direct current boost circuit are installed to the cap body, direct current boost circuit's positive cathode output is connected with two -layer active carbon filter layer respectively, forms the electric field between messenger's active carbon filter layer. This outdoor cap prevents by the flexibility that the intraformational activated carbon layer of haze carries out harmful gas's elementary absorption, not by absorbent tiny particle under the effect of electric field between the activated carbon layer, crossed the filter pulp more easily to catch, so antifog haze effect is better, under direct current boost circuit's effect, the electric field between the active carbon net is stronger, including the exhalation air contains higher moisture, makes short circuit dischange between the active carbon net easily, and then produces the anion, strengthens the clear effect of haze.