Abstract: Bursting disc is widely used in petroleum,chemical industry and aerospace,which has important role in pressure vessels and pipelines safety protection.The reverse domed scored bursting disc is opened by structural instability,and the opening pressure is equal to the bursting pressure of the structure.Under the condition of certain material and design diameter,the bursting pressure is mainly related to the thickness of the bursting disc,the camber height and the residual thickness of the notch area.In order to improve the forming process performance of reverse domed "cross" scored bursting disc,this paper studies the influence of the above main parameters on its opening pressure,and analyzes the influence of parameter selection on the forming process and product performance.Finally,this paper gives the basic principles of parameter selection,which has a certain guiding significance for engineering application.