Combustion synthesis is an emerging material preparation method. The basic principles, classification and application of combustion synthesis technology are introduced. Combustion synthetic surface coating technology has become an important material surface modification technology, combustion synthetic coating technology can be widely used in petrochemical industry important equipment large-area anti-corrosion, can focus on preventing high temperature oxidation, high temperature sulfur corrosion, acid corrosion and dew point corrosion, etc., for improving product yield and quality, tapping potential and efficiency, transforming existing production equipment, extending the start cycle, ensuring safe production are all important, can bring huge economic and social benefits.