Abstract: The structures of the non-navigable spans of bridge piers are usually thin in design, it is difficult to make the vessel collision force decay to an affordable range even with the latest anti-collision technology in the engineering practice. In order to solve this problem, analysis and research of the latest anti-collision technology at home and abroad have been carried out, then a combined interception and anti-collision method for protecting the non-navigable spans of the bridge piers against collision is developed, namely an anti-collision facility combining trigger rotary intercepting network with flexible anti-collision ring which is installed closely to the piers. When the vessel goes out of control and is towards the piers with a certain speed, it must be intercepted firstly by the network placed at the bridge′s upstream. In the process of the network snapped， the speed of the vessel will be greatly reduced. Then the vessel rushs out of the network and collides against the piers, the anti-collision facility would play an integral role as soon as possible so that the intense impact force could be changed into a weaker distributed load, and the vessel turns away as soon as possible, and thus taking away the remaining kinetic energy as much as possible, so it will achieve the purpose of protecting piers effectively. By calculation and analysis, the combined anti-collision facility has good effects and is relatively inexpensive and easy to operate implement. The anti-collision facility can avoid unfavorable impacts on environment if the riverbed topography of the bridge area will be fully taken into account in the further design.