Abstract: The development trend of high frequency, miniaturization and low power consumption of inductor components has put forward higher requirements for the application characteristics of soft magnetic composite materials at high frequencies. As an effective means to reduce eddy current losses at high frequencies, the development of insulation coating technology has received widespread attention. Insulation coating technology is a key link in the preparation process of soft magnetic composite materials. By insulating and coating soft magnetic metal powders, eddy current losses can be effectively reduced. This article reviews the research status and characteristics of organic coating, inorganic coating, and inorganic-organic composite coating processes from the perspective of coating technology for soft magnetic metal composites, and discusses out the challenges and possible development directions currently faced in the field of insulation coating.