Abstract: According to the characteristics of shipbuilding enterprise informatization, a risk identification method combining the fault tree analysis and the work breakdown structure and risk breakdown structure (WBS-RBS) is presented. The method established by WBS-RBS determines the coupling matrix in which shipbuilding enterprise informatization risk factors may exist, and builds the major fault tree based on the rules of the fault tree and the logical relationship of the risk factors in shipbuilding enterprise informatization. The probability of the occurrence of each risk factor is obtained by the improved risk checklist. On this basis, the importance of the risk factors is analyzed. Finally, an example is presented to prove that the above risk identification method is feasible and practical.