Abstract: Archiving marine geological data has so far become an important component of marine geological survey. Workflow analysis of a marine geological data archive involves the whole process of producing and archiving marine geological data. According to the formation and archiving of marine geological data at the present, archiving data includes the process of data description, summarization and abstraction. It is a tough work to analyze the tasks, operations and the phases of the workflow. According to the actual situation of the process of archiving, the Petri net model is adopted to control the processes of archiving data. The Workflow for archiving marine geological data covers the whole process of the formation, archiving and delivery of marine geological data. It helps to improve the level of business organization and work efficiency, and to ensure the automation and informatization of the archiving and management of marine geological data.