The invention discloses a manufacturing technology for microfiber composite leather. By improving technological parameters of retanning, physical properties (such as anti-tearing capability, wearing resistance and elasticity) of obtained split leather are still good; meanwhile, disadvantages of cattle split leather and microfiber leather are mutually complemented and a microfiber leather blank with a flat and clean surface is compounded on the surface of the split leather, so that the aesthetic defects that the surface of the split leather is not flat and has vein marks are overcome and a product has the advantages of leather imitation and low cost; and the split leather which is used as a bottom layer solves the problems that the microfiber leather has poor elasticity and cold resistance, and the quality and grade of the product are improved. According to the manufacturing technology for the microfiber composite leather, disclosed by the invention, the grade of the microfiber composite leather manufactured by the manufacturing technology is better than that of synthetic leather and artificial leather and the price of the microfiber composite leather is lower than that of top-layer natural leather, so that the microfiber composite leather can be widely applied to production of leather products including high-grade sofas, bags, shoes and the like and has a very wide market prospect.