Abstract: In the process of metrology implementation, it is common to encounter situations what enterprise persons have an unclear understanding of the policy in metrology laws and regulations. Issues such as how to establish the inspection cycles for mandatory equipment, how to conduct traceability for instruments and devices, how to ensure the accuracy and reliability of measurement, or how to apply data to actual production and so on. I aim to use practical studies to integrate the application of laws and regulations into the production accually.On one hand, it strengthens metrological government, supports enterprises, safeguards production and protects their interests; The other hand, this approach helps to enhance to corporate competitiveness and eliminate international trade barriers.