Some problems hinder the achievement of information traceability management in the process of construction machinery remanufacturing, which are the complexity of tracing process and the difficulty of effectively integrating material relationship and information of manufacturing process. Based on the activity-based bill of material，a tracing method was proposed, and the tracing model for the process of construction machinery remanufacturing was built. In this model, the traceability entity of the remanufacturing process was divided into three classes: product, operation and activity, which were described with "Backus-Naur Form". An information model for the process of construction machinery remanufacturing was established, while a tracing model was built by using symbolic traceable activity chain and network. The material relationship and information of manufacturing were effectively integrated with the activity-based bill of material, and the tracing process was also simplified with the tracing model.