"GB/T 10561-2023 Determination of Non-metallic Inclusions in Steel, Standard Rating Chart Microscopic Inspection Method" is a standard issued by the National Standardization Administration of China to evaluate the content of Non-metallic inclusions in steel. The standard uses the rating chart microscopic inspection method to observe and evaluate the inclusions in the steel section through a microscope to determine its content level and mass grade. Non-metallic inclusions in steel are impurities that are insoluble in steel introduced by raw materials and smelting processes, and have an important impact on the performance of steel. Through the implementation of this standard, steel production enterprises can carry out effective quality control and monitoring, and improve the mass Stability and production efficiency of steel.