Abstract: Based on the analysis of the characteristics in the process risk management of projects, the author has focused on the Fuzzy-ETA(event tree analysis)-FTA(fault tree analysis) method applied in the process risk management of R&D projects.The author has analyzed the possibility of an integration of EAT-FAT,and solved the problems in the integration of Fuzzy-EAT and Fuzzy-FAT by applying arithmetic average and geometric average, thus solving managerial problems in the process risk management of projects with reliable and effective process risk management guidance. The results are practical guides and importance references for the management of large R&D projects for the Chinese military equipment investments.

Key words: R&D projects, process risk, integration and intelligentization, Fuzzy-ETA-FTA theory