Since 1997, Henan Provincial Bureau of Quality and Technical Supervision has accumulated certain working experience for leaders, managers and nuclear experts at all levels of city and county-level metrological verification institutions. In order to help the leaders, managers and examiners of legal metrological verification institutions at all levels fully understand and master the basic ideas, content points and implementation methods of JJF 1069-2007 "Assessment Standards for Legal Metrological Verification Institutions" and accurately grasp the basic principles, assessment priorities and assessment methods, according to JJF 1069-2007 "Assessment Standards for Legal Metrological Verification Institutions" and This textbook can be used as an examination and training textbook for examiners, leaders and managers of legal metrological verification institutions, and can also be used as a reference for other metrological personnel.