When military helicopters and transport aircraft take off and land forcibly on desert or simple runway, sand and dust will cause solid particle erosion damage to aircraft blades, leading to compressor performance degradation and structural integrity damage, which seriously affects the reliability of the engine. For the field of erosion protection, this book introduces the following six aspects, including erosion mechanism, influencing factors, protection methods, preparation methods, coating systems and structures, and the application status of erosion resistant coatings. The research and development direction of erosion resistant coating technology in the future was clarified, which laid a foundation for further research and application of erosion resistant coating technology.