Abstract: Laboratory test results of quality assurance ability,directly or indirectly reflects the comprehensive capability of laboratory.The quality assurance is the key to the laboratory quality management and is also a difficult content.According to the actual situation of testing laboratory,this paper discusses the established quality control procedures,quality control plan,implement quality control plan,quality control methods,audit quality control results and key control six key elements in the process of detection,and combined with laboratory management system and measurement control system requirements,do a good job in laboratory,quality control and quality assurance,won the customer’s satisfaction.