Abstract: A shading cover for motorcycles is to provide a box, a winding device and a canvas. The box being set on the rear seat of a motorcycle has an upper cover, a T-shaped block and a spring buckle. The winding device being inside the box is composed of a U-shaped block, a fixed shaft sleeve, a reel with a canvas, a spring, a left shaft sleeve, a right shaft sleeve, a cross bar and a push bar. The improvement is in the canvas which is rolled up onto the reel, and has a long flexible band sawn on the lower edge of the canvas, a long zipper with an additional canvas piece sawn on the upper front of the canvas, two short zippers with bags and rainhats sawn on the upper middle part of the canvas, and two canvas sleeves with short flexible bands placed on both sides of the canvas so that the canvas can be used as a sun shade and a raincoat.