Abstract:According to the requirements of GB / T19001-2000 quality management system, PDCA cycle method can be applied to all processes of quality management. Based on the empirical analysis, the paper analyzes the application of PDCA cycle in the quality improvement of science and technology projects. The results show that PDCA cycle can be used to standardize the expression and guidance of the quality improvement activities of science and technology projects. According to the operation steps of PDCA cycle, from the beginning to analyze the problems existing in the project management of science and technology projects, and then formulate corresponding measures and plans, monitor the implementation process, to the end of summarize. Finally, a set of systematic quality improvement mode is formed to seek the continuous improvement of scientific research projects quality.