The invention discloses a method for dynamically building and realizing a marine application in a dynamic service chain manner. The method comprises the steps: 1, abstracting atomic service, wherein a normalized atomic service interface is confirmed; 2, abstracting service chain model elements, wherein a visualized representation form of the basic elements of the service chain, as well as a description method, a constraint and the like, is defined; 3, creating a service chain, wherein a service chain model aiming to a specific marine application is formed based on a visualized operation interface; 4, validating the service chain, wherein the validity and logicality of the marine application service chain created by a user are validated; and 5, managing the service chain, wherein monitoring and management are carried out over the forming and implementation sequence of the service chain, and over the state of each atomic service of the service chain. The method provided by the invention is capable of visually and quickly realizing the novel marine application requirement, and has the advantages that what you see is what you get, and flexible and dynamic performances are provided.