This document gives an overview of the risk assessment of Electromagnetic Compatibility (EMC) in electrical and electronic systems, the purpose of EMC risk assessment mechanism and ideal model, the degree of influence of risk elements and risk classification, EMC risk identification. Risk assessment report requirements. This document is applicable to the EMC risk assessment of electrical and electronic systems. Note: The electronic and electrical systems in this document include industrial, scientific and medical equipment, road vehicles, ships, etc., and are applicable to the radio frequency range.