The invention relates to a polypropylene material and a preparation method thereof, in particular to a glass fiber reinforced polypropylene micro foaming material for an electric tool and a preparation method thereof, which belong to the technical field of high polymer materials. The glass fiber reinforced polypropylene micro foaming material for the electric tool comprises components with part by weight: polypropylene 40-80 parts, compatilizer 2-5 parts, glass fibers 10-50 parts, microcellular foaming composite additives 2-15 parts, foaming agents 0.5-5 parts and antioxidant 0.2-2 parts. The glass fiber reinforced polypropylene micro foaming material for the electric tool and the preparation method thereof reduce weight of workpieces by adopting micro foam injection molding technology under the premise that the mechanical property of glass-fiber reinforced polypropylene is guaranteed not to loss, improves portability, and obviously reduces production cost. Simultaneously, the glass fiber reinforced polypropylene micro foaming material for the electric tool and the preparation method thereof obviously improve surface quality of polypropylene foam materials by adopting microcellular foaming composite additives, solves the problems that the surface of the workpieces are dazzled and have gas marks and the like when shells of tools are injected, and meets the appliance demands in the field of electric tools. The glass fiber reinforced polypropylene micro foaming material for the electric tool and the preparation method thereof also can be used for other fields such as automobiles, buildings, electron and shipbuilding and the like.