Organizations involved in new product development (NPD) can adopt quality management (QM ) systems to opti‐mize their NPD processes and improve their NPD performance .However ,research into the relationship between QM and NPD produces inconsistent findings .Based on taxonomy of QM practices ,the paper classifies QM practices into infra‐structure quality management practices (IQMP) and cores quality management practices (CQMP) ,and proposes a concep‐tual model which incorporated IQMP ,CQMP ,NPD capability and NPD performance .This paper contributes to a further understanding of the link between QM and NPD by investigating why and how more effective QM can promote NPD .The results show that IQMP significantly promotes NPD capability and NPD performance ,while CQMP will hinder NPD per‐formance and the influence of CQMP on NPD capability is insignificant .%新产品开发企业可以利用质量管理系统优化新产品开发过程，改善新产品开发绩效，但质量管理改善新产品开发绩效的机理并不明确，质量管理实践与新产品开发绩效间关系的研究结论也不一致。将质量管理实践分为基础质量管理实践和核心质量管理实践两类，根据能力理论构建了质量管理实践、新产品开发能力与新产品开发绩效的影响机理模型。研究发现，基础质量管理实践能够显著促进新产品开发能力提升，而核心质量管理实践对新产品开发能力的影响不显著；基础质量管理实践能显著促进新产品开发绩效，而核心质量管理实践在一定程度上会阻碍新产品开发绩效。
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