The invention belongs to the field of medical instruments, and particularly relates to a metal composite material containing an anti-corrosion coating, a degradable magnesium alloy bone screw and an application. The metal composite material containing the anti-corrosion coating comprises a base body and a composite coating attached to the base body, wherein the composite coating sequentially comprises an oxidation ceramic layer and a calcium-phosphorus salt layer from inside to outside, the oxide ceramic layer is attached to the base body through micro-arc oxidation, and the calcium-phosphorussalt layer is attached to the oxidation ceramic layer through electrochemical deposition. According to the metal composite material containing the anti-corrosion coating, the corrosion resistance andthe tissue affinity of the metal material are improved, the preparation of bone repairing materials is applicative, particularly bone repair materials for bone internal fixation, and the metal composite material is simple in process, low in cost, excellent in performance, safe and environment-friendly, easy to implement and capable of realizing industrialization successfully. The invention further provides the degradable magnesium alloy bone screw prepared from the material.