In view of the situation that civil aircraft structure repair process will encounter beyond the scope of the manual, in order to provide relevant reference for maintenance engineers to develop repair plan, and quickly develop a reasonable repair plan, a civil aircraft structure repair plan platform based on B/S (Browser/service) is developed. Firstly, the platform requirements are analyzed from the perspective of business process and platform function. Then it introduces the technologies used in the platform development, and describes the platform design in detail from three aspects of platform architecture, database and platform function module. Finally, the main function modules of the platform are tested through the actual operation demonstration. The test results show that the platform has friendly man-machine interface, good expansibility, simple and convenient operation, realizes the electronization of civil aircraft structure damage information and repair scheme, and can automatically recommend several repair schemes stored in the database according to the damage information, which provides support for the maintenance engineering department to quickly formulate the repair scheme beyond the manual.