The invention discloses an annular reinforcing structure for preventing the pier top from splitting and a laying method thereof, which relates to the technical field of bridge reinforcing. The reinforcing structure comprises a plurality of reinforcing rings surrounding the side walls of the pier, and the reinforcing rings are arranged at intervals along the height direction of the pier. At least one steer device, that steering device is arrange on the side wall of the pier; At least one reinforce steel bundle; At the same time, the free end of the reinforcing steel bundle is detachably arranged on the anchorage base, the reinforcing steel bundle passes through the steering device and is laid on the side wall of the pier, and the reinforcing steel bundle is pulled around the side wall of the pier. As that anchor base, the steering device and the reinforce steel bundle are combined, the reinforcing steel bundle can be annularly reinforced on the side wall of the bridge pier, the side wall of the bridge pier is tighten under the condition that the reinforcing steel bundle is pulled, splitting of the pier top is avoided, and the service life of the bridge pier is prolonged.