This is an outdoor leg guard snow cover suitable for outdoor enthusiasts who engage in activities such as mountaineering, hiking, traversing, and skiing. It enhances walking comfort and safety, especially in complex terrains or adverse weather conditions. It features a dual reinforcement structure consisting of Velcro and zippers, ensuring easy donning and sealing, effectively preventing wind, snow, and sediment from entering the pants legs and shoes. The surface undergoes waterproof treatment, maintaining dryness and preventing stains from adhering to the pants legs and shoes in snowy, muddy, or humid environments. The bottom is equipped with a stainless steel hook that can hook onto the shoelace to prevent the snow cover from slipping off. The adjustable elastic strap at the top can be tightened according to the leg circumference, further preventing foreign objects from entering. It provides wind and snow protection, water and mud resistance, insect and snake prevention, reduces scratching and biting from branches and gravel on the legs, blocks wind and sand, and prevents fine sand from entering the shoes.