An enhanced non-coplanar double winding reinforcement method has a main reinforcing bars erecting step, a reinforcement stirrup winding step, and a crossties double hooking and confining step. The main reinforcing bars and the reinforcement stirrup can be stably confined by the crossties. No iron wire is needed for bundling. Toughness and aseismatic capability of a structure built by the enhanced non-coplanar double winding reinforcement method is improved. Accordingly, construction steps are simplified and construction efficiency are increased. A first plane defined by a main rod portion and a first hook portion of the crosstie and a second plane defined by the main rod portion and a second hook portion of the crosstie intersect, the second hook portion can pass between two of the main reinforcing bars that are disposed next to each other even when the main reinforcing bars are densely arranged.