In CIMS for feeding back the process quality problems to relevant department in time, finding out the corrective actions rapidly, taking process quality tracing-back and quality improvement as cores, connecting workflow technology with real demands of quality tracing-back and evaluating, on the basis of deeply analysis of process quality , a web-based workflow model for tracing-back and close loop is established. Collaborative tracing-back and workflow control engine are analyzed. Based on process quality abnormity analysis, the implementation method with collaborative evaluation of fuzzy outranking for quality collaborative tracing-back is developed, which can help quality control engineer finding out the cause of problem and responsibility department in time. The application of above method in a quality improvement process is represented