The metallographic analyzer is used to identify and analyze the combined structures of various metal and alloy materials. It is widely used in the factory or laboratory to appraise the quality of castings, inspect raw materials or analyze the metallographic structure after material treatment, and to study some surface phenomena in surface spraying. It is an effective means of metallographic analysis of iron and steel, non-ferrous metal materials, castings and coatings, lithofacies analysis of geology, and microscopic research of compounds and ceramics in the industrial field. It is a necessary instrument for Metallography and Materials Science to study the structure of materials. It is also widely used in the fields of biology, medicine and teaching.