PDCA cycle was first proposed by American quality management expert Walter A. Shewhart. It was adopted, publicized and popularized by Deming, so it is also called pdsa.

The idea and method of total quality management is based on PDCA cycle. The meaning of PDCA cycle is to divide quality management into four stages, namely, planning, implementation, inspection and action. In the quality management activities, it is required to plan, implement and check the implementation effect as planned, and the successful ones will be included in the standards, and the unsuccessful ones will be left to the next cycle. This working method is the basic method of quality management and the general law of enterprise management.

Application stage of PDCA cycle

1, planning stage. Through market research and user visits, we should understand the user's requirements for product quality and determine the quality policy, quality objectives and quality plan. Including the investigation and analysis of the current situation, determining the main reasons and making plans.

2. Design and implementation stage. Implement the content specified in the previous stage. Conduct product design, trial production, testing and personnel training before the implementation of the plan according to quality standards.

3. Inspection stage. Mainly during or after the implementation of the plan, check the implementation to see if the expected results and effects of the plan are achieved.

4. Processing stage. Mainly according to the inspection results, take corresponding measures. Consolidate the achievements, incorporate successful experiences into the standards as far as possible, standardize them, and transfer the remaining problems to the next PDCA cycle to solve.