The invention belongs to the field of injection molding product forming and discloses a preparation method of a carbon fiber enhanced multilayered structure injection molding product and a product ofthe preparation method. The preparation method comprises the following steps: a, preparing a carbon fiber enhancement layer and a connection layer through the electrostatic powder spraying technology;b, stacking the carbon fiber enhancement layer and the connection layer and then carrying out hot-press forming to form carbon fiber enhanced composite material, wherein the connection layer is stacked on the uppermost layer; and c, putting the carbon fiber enhanced composite material in a die and carrying out injection molding to obtain the required product. The invention further discloses the product prepared through the preparation method. Compared with the preparation method, a high-viscosity material composite material plate is obtained through the hot-pressing technology with low cost and high efficiency; in addition, the multilayered composite material structure is obtained by combining with the intramode injection molding technology, so that the high material cost is reduced and the surface decoration function is also played; and compared with the electronic engineering plastic with the same thickness, the product is high in mechanical strength.