In order to provide complete technical support for the disposal of submarine pipelines, the decision-making process, key issues and solutions for the disposal plan of the submarine pipelines are introduced by combining the analysis of the disposal process of the submarine pipelines with practical cases. A standard framework is established for guiding disposal operations, dividing plan development into four stages: information collection, plan construction, plan comparison and plan execution. The work content and focus of each stage are also elaborated on. On this basis, the case of submarine pipeline disposal is combined to elaborate on the usage and impact of various disposal methods during the disposal process, and the characteristics of each method are compared from multiple perspectives, in order to provide guidance and reference for specific projects.