Under the background of Emerging Engineering Education, the traditional experiment teaching cannot meet the needs of diversified and innovative talents in the present society, and the subversive reform is needed. In the reform of experimental teaching, process control is always the difficult point in quality management. Taking the mechanical experiment teaching quality as the research object, the application of PDCA cycle in quality management of mechanical experiment teaching is discussed. First of all, on the basis of the analysis of the mechanical talents training target, the experimental targets are determined and the experimental projects are designed. And then, mechanical experiment teaching model based on BOPPPS is proposed, the influencing factors of the experiment teaching quality are analyzed. Finally, the improvement plan is established to enter the next cycle. The mechanical experimental teaching quality would be continuously improved through PDCA cycle.