In the modern manufacturing mode, product is often manufactured by multi-enterprise, so effective and dynamic tracking for process quality information is the precondition to realize product quality control in distributed enterprises. Aiming at these demands, a dynamic tracking method for inter-enterprise quality information based on process quality BOM (PQ-BOM) was put forward in this paper. PQ-BOM was employed as the carrier and organization form of process quality information. With the formal definition of PQ-BOM, structure information and process information included in PQ-BOM were mapped to three-layer process model. The process BOM is dynamically updated with the process change, thus the in-time and history quality information tracking is achieved by dynamically reconfigured PQ-BOM. Finally, the application of proposed method has been described in detail.