Objective To study the main influencing factors of the accuracy of beer packaging on the production line, and to find out solutions that could improve the packaging accuracy based on the main factors. Methods Using 8D analysis, through the formation of a team with comprehensive knowledge and experience, via eight steps and a preparatory step, a step by step approach was proposed to solve the raised problem, and then contrasted and improved by combining with the implementation results and analysis methods. Results By improving the reliability of the ring seal, controlling the installation manufacturing precision, enhancing the refined accuracy of the control system of filling, improving the structure of the filling valve, and refining of the management systems, the packaging accuracy on the beer production line was improved. Conclusion Using 8D analysis to analyze the packing accuracy of beer production line, the packaging accuracy was improved and the loss caused due to low precision packaging was reduced, and finally the economic efficiency of enterprises and the customer trust were improved.