Abstract: A safety protective cover of a blender. The protective cover is associated with upper edge of a blending container. The bottom of the protective cover at least covers an upper opening of the blending container. The top side of the protective cover is formed with an opening at an axis of the rotary shaft. The opening linearly extends to a circumference of the protective cover to form a split. A water filling hole is formed on the protective cover. At least one latch section is disposed on the bottom of the protective cover for latching the protective cover with upper edge of the blending container.