Traditional single server distributed storage system is difficult to meet the real-time requirements of the avionic system.The cloud storage technology can effectively improve the speed of data access.In order to improve the real-time performance of data access,a cloud storage scheme suitable for avionic system is designed.The data is distributed and stored in multiple servers,and the task is decomposed into multiple subtasks according to the characteristics of data storage.The subtasks can access multiple servers simultaneously, so as to improve the real-time performance of data access.The experimental results show that the cloud storage system with multi-machine cooperation has higher access speed than the traditional single machine storage system does.