Abstract: In order to further optimize the site assessment and management work for mine-used products safety sign, the paper summarizes the main problems of the site assessment management, analyzes the reasons and countermeasures from the related management system requirements, auditors, factories. Through investigation and analysis of requirements and general methods of common certification system at home and abroad, it focuses on the revision of audit standards, analyzes and discusses that the audit differentiation, frequency of supervision, whether to ask the factories to pass the quality management system certification, whether to inform the factory before supervision audit.