The invention discloses a composite material tool produced on the basis of an automobile die. Materials of the die include, by mass percent, 4.2%-4.6% of aluminum oxide, 5.7%-6.5% of silicon nitride,8.4%-9.2% of titanium carbide, 6.7%-7.7% of titanium oxide, 1.3%-1.6% of molybdenum carbide, 2.2%-2.8% of tungsten carbide, 3.2%-3.5% of molybdenum oxide, 0.6%-1% of nickel, 0.8%-1.2% of chromic oxide, 1.6%-2.1% of vanadium carbide, 3.5%-4.5% of carbon, 0.2%-0.4% of niobium pentoxide, 0.1%-0.2% of yttrium oxide, 0.1%-0.2% of lanthanum sesquioxide, and the balance iron. The invention further discloses a preparing method of the composite material tool produced on the basis of the automobile die. The manufacturing technology is simple, and the price of adopted raw materials is low. Compared witha traditional diamond coating tool, the production cost is greatly reduced. A tool blank is manufactured through a composite material, the characters of high hardness, high compression resisting strength and high bending strength are achieved. Two clad layers of different materials are arranged on the tool blank through plating via the chemical vapor deposition method, the abrasion resistance, corrosion resistance, impact resistance and other performance are improved, the work performance of the composite material tool is greatly improved, the service life of the composite material tool is greatly prolonged, and very high usage and economical value is achieved.