Abstract:Metrology law has the dual attributes of science and technology law and supervision law.China's Metrology Law is still a regulatory law, and the value of the science and technology law is completely missing. The national metrology institute is the highest metrology technical institute in a country, which has an important position in the metrology law and also has an important status in international law.The revision of the Metrology Law should strengthen its scientific and technological law, and establish a national metrology scientific and technological infrastructure system framework centered on the national metrology institute.The Metrology Law should clarify the legal status and statutory responsibilities of the national metrology institute, guarantee the nationality of the national metrology institute, and formulate the National Metrology Institute Regulation in the form of departmental regulations.