In order to study the factors affecting the quality of B2C enterprises data assets,this paper analyzes the qualitative materials formed by semi-structured interviews and codes the materials step by step based on the grounded theory. The paper finds that factors of motivation,standard and regulation,process management,support and guarantee have important influences on the quality of data. Because of the limitations of the research samples,factors influencing data assets quality cannot be exhausted in this paper. Further practice is needed to perfect the conclusions.