The invention relates to the technical field of ships, in particular to a deformation tearing prevention bulwark structure. The deformation tearing prevention bulwark structure comprises bulwark plates which are welded to each other, a bulwark top plate, bulwark gaps, bulwark knee plates and bulwark drain holes; the bulwark plates are located on the two sides of a ship respectively, connected witha shell plating and arranged on a main deck, and the two adjacent bulwark plates are not connected with each other. By the adoption of the deformation tearing prevention bulwark structure, bulwarks can be prevented from being deformed or torn when the ship sails on big waves, sea water can be prevented from rising to the deck to a certain degree, and normal operation of mechanical equipment on the deck and safety of navigation operating personnel on the deck are guaranteed. In the weather with big waves, the deformation tearing prevention bulwark structure can effectively prevent the operating personnel on the deck from falling into sea, can have a good safety protection function, can effectively drain rainwater or part of shipping water into the sea through the bulwark drain holes, is low in design and construction cost, simple in structure and convenient to produce and mount, improves the shipbuilding efficiency, and shortens the shipbuilding period.