随着世界经济一体化进程的不断加快,质量日趋成为市场竞争的关键因素。各实验室为适应国内外形势的变化,逐步建立了质量管理体系,采取PDCA循环这一闭环形式,以更有效地控制质量,即P(plan)是制定计划,D(do)是实施,C(check)是检查,A(action)是处置与改进。内部审核(简称内审)是PDCA循环中C阶段的主要活动,也是对申请实验室资质认定的明确要求,用以验证管理体系是否持续满足规定 As the process of world economic integration continues to accelerate, quality has increasingly become the key factor in market competition. In order to adapt to the changes in the situation both at home and abroad, laboratories gradually set up a quality management system and adopted a closed-loop PDCA cycle to control quality more effectively. That is, P (plan) is to plan, D (do) to be implemented, C (check) is to check, A (action) is the disposal and improvement. The internal audit (referred to as internal audit) is the main activity of Phase C in the PDCA cycle. It is also a clear requirement for accreditation of laboratory accreditation to verify whether the management system continuously meets the requirements