The invention relates to an automotive anti-collision beam made of a carbon fiber composite material and an HSM (heat self molding) process of the automotive anti-collision beam. According to the process, shapable pre-molded heat self-expansion high-energy glue is placed into a product core material mold and heated to be slightly expanded, an obtained core material is coated with carbon fiber prepreg, a composite material preform is obtained and placed into a mold, the mold is closed tightly, the composite material preform is heated for second time for curing forming, then cooling, demolding and part taking are performed, and the automotive anti-collision beam made of the carbon fiber composite material is obtained. By means of the HSM process of the automotive anti-collision beam made ofthe carbon fiber composite material, carbon fibers and the high-energy glue are combined, product making is finished through two times of molding by aid of heat self-expansion of the high-energy glue,the process is concise, the product is full in appearance, the density range of the product is 0.3-1.1 g/cm<3>, the weight reducing ratio can reach 40%-50% as compared with that of the traditional steel structure, the product is high in strength, damage of collision to the carbon fiber composite material can be reduced effectively, and maintenance cost is reduced.