The present invention is related to a fixed structure for faucets and bathroom accessories, which at least includes a base and an external part, wherein the bottom side of the base is fixed on a connected body and the base has a hollow chamber in the body, at least a functional hole is set on the circumference of the body, an elastic piece is extended inwards from a part of circumference of the functional hole, a convex column is set on the end of the elastic piece; the external part has a hollow chamber set on the bottom side for placing the body of the base, and at least a slipping hole set on the circumference of the hollow chamber is provided for the convex column of the elastic piece to buckle into for positioning, to thereby achieve the purpose of quickly assembly and conveniently installing and operating.