The article discusses methods for identifying non-metallic inclusions in 110G13L steel. Particular attention is paid to the electrolytic extraction method, which allows the identification of oxides, sulfides, and nitrides. Various methods for analyzing inclusions are considered, including metallography, X-ray diffraction, and spectroscopic methods. It is established that aluminosilicates and oxysulfide inclusions play a key role in high-manganese steel. The importance of monitoring the content of oxygen, phosphorus and other impurities for improving the quality of steel is shown.