The utility model discloses a multifunctional safety helmet of winter protection shaded effects. Multifunctional safety helmet includes the cap shell and the brim of a hat, and the both sides of cap shell are equipped with the ear muff, and the ear muff includes the cover body at connecting rod and connecting rod both ends, and the anterior top of the brim of a hat is equipped with the sunshade cap, its characterized in that, the horizontal middle part of cap shell is equipped with the slot, and the fore -and -aft both sides in slot bottom are equipped with to protect encloses, in the slot is arranged in to the connecting rod of ear muff, the cover body of ear muff arrange in protect enclose in, the bilateral symmetry of brim of a hat front end top is equipped with fore -and -aft spout, the both sides of sunshade cap are arranged in the spout. This multifunctional safety helmet simple structure, easy dismounting can protect personal safety, can play the effect of winter protection sunshade again.