Focusing on the issue of quality tracing for discrete manufacturing workshop, a conceptual framework for quality tracing system integrating product batch information tracing and root causes tracing for quality faults is proposed. Based on the machining process-related batch information, quality information and machining status information, which are automatically real-time collected by using RFID technology and Auto-ID computing technology, the proposed system can carry out forward traceability, backward traceability and root causes tracing for quality accidents. Then, key enabling technologies for the system is presented in detail. Finally, a prototype system based on browser/server (B/S) architecture is developed, and a simple case is given to verify the feasibility of the proposed framework.