With the increasing competition in the aviation manufacturing industry, the development of civil aircraft products is facing the challenges such as increased complexity, greatly reduced the development costs and development cycles. Starting from the characteristics of civil aircraft research and development, using the industrial internet architecture, we explore methods for building a digital environment for civil aircraft R&D. Based on key technologies for digital transformation such as the cloud computing technology, Internet of Things technology, industrial software service-oriented technology, basic environment service-oriented technology, this paper proposes a digital environment architecture based on industrial Internet, and takes the research and development of an aircraft aileron control system as an application scenario, analyzes the key technologies in the digital environment, explores and practices the application of digital environment architecture to improve research and development efficiency, optimize resource utilization, and reduce data management risks. It helps achieving the promotion of digital empowerment and transformation in the civil aircraft development industry. It can provide a reference for promoting the digital transformation and upgrading of the integration of information technology and aviation manufacturing industry and provide references for the construction and development of the digital environment for the subsequent civil aircraft R&D.