The invention belongs to the technical field of high polymer materials, and particularly relates to a specialized impact-resistant PP/PE alloy draw-bar box material with a microcrystalline structure and a preparation method of the material. The specialized material is prepared from, by weight, 80-90 parts of polypropylene, 10-20 parts of polyethylene, 5-15 parts of a compatibilizer and 0.1-10 parts of a toughening modifier. The method is easy to operate, friendly to environment and good in feasibility. The material has the special microcrystalline structure and the excellent impact resistance, can overcome the defect that polypropylene resin is low in impact strength to a great extent without sacrificing the bending property and the tensile property and can be applied by serving as specialized draw-bar box plastic alloy and child toy plastic.