▎ 摘　　要

NOVELTY - Constructing titanium alloy surface composite hydrogel coating comprises (i) performing hydroxylation treatment to the surface of the titanium alloy, (ii) orderly placing the surface of the titanium alloy after hydroxylation treatment into the silane coupling agent aqueous solution and the dopamine solution to obtain the adhesive layer, and (iii) using the combination of the sol and the adhesive layer, so that the titanium alloy surface is provided with titanium alloy composite hydrogel coating. USE - The method is useful for reducing bone tissue abrasion. ADVANTAGE - The method enables improving titanium alloy and cortical bone interface friction characteristic and titanium alloy surface body fluid corrosion resistance and reducing bone tissue abrasion. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for titanium alloy composite hydrogel coating.