This article elaborates briefly development of entering and reporting registration system platform according to the requirements of the CAU Library to prevent and control the epidemic COVID-19. The development of the system are extremely significant in supporting the teaching progress of the university and protecting the users on the campus. It has clarified the system development principles and implement methods used in developing the system for facilitating the prevention and control of the epidemic COVID-19 on the campus including good compatibility, comprehensive user management permissions, perfect business processes, multi-mode login, and custom entering record data output. Based on the B/S model, various open source technologies such as LAMP architecture, Bootstrap and LayUI framework, AJAX technology, JSON data exchange format, combined with QR code technology are mainly adopted in developing the system after literature review. The major system functions are realized by five functional modules: user login, application management, QR code management, entering library record management and system management. Each module carries out strict operation control according to different use-permission of users. Compared with the traditional manual record management mode, the research result shows that compared with the traditional manual record management mode, the platform management mode of the library entering and reporting registration system has the advantages of high efficiency, convenience, accuracy and reliability which achieved 100% of the library entrance registration. Because of its strong practicability and high expansibility, it has been widely adopted by other colleges of the university and achieved very good expected results.