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In the information age, in order to improve the level of teaching-affairs management and simplify the workflow, according to the problems and insufficiency in the graduation design management, the online graduation design quality management system has been developed, which implements the online process of graduation design management. The system uses YII2 framework to implement modular design of system functions, uses Bootstrap technology to build responsive, mobile-first user interface, uses FPDI_PDF-Parser to make watermark generation and connects to MySQL to implement data storage and process. Using the system on internet, teachers and students can make interaction between each other, which breaks through time and space limitations of traditional education. Through the actual work test, the system runs stably and has strong expansibility. It can meet the needs of high concurrent visits. It is convenient for teachers and students to carry out paper guidance work. At the same time, it also strengthens the supervision and management of the design process by the management department. It has high application and promotion value.