Abstract:  The modeling of variability is a hot research topic in the field of software product line. At present, the research is limited to the demand stage, which lacks a complete theoretical system and detailed guidance from field engineering to application engineering. Aiming at this problem, this paper improves the existing method and process of constructing feature models to support the software life cycle, strengthen the mapping between the various models, enhance process operability, and ensure consistency between models. Finally, the demand phase variability model and the design phase variability model are obtained, which are successfully applied to the secondary development of teaching service management system. Through component development and efficiency comparison, it is verified that the improved method provides effective support for reuse.

Key words: software product line, variability modeling, feature modeling, reference architecture, variable components