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Objective With the development of science and technology，more and more attention is paid to electromagnetic compatibility at home and abroad.Plants do not try reasonable suppression in product design，which is the most important reason why unqualified EMC of X-ray machine is found in the testing work.The purpose of this paper is to sum up the methods to improve the common unqualified items.Methods In this paper，we put forward common ideas and measures of rectification through electrostatic discharge，RF electromagnetic field immunity testing and so on.The mechanism and propagation of electromagnetic interference of X-ray machine are analyzed in detail.Results In the process of electromagnetic compatibility project of X-ray machine，we usually optimize the product by increasing the shielding of the shell，strengthening the grounding，changing the shielding wire and so on to enhance its anti-jamming ability.Rectification of PCB board is the most difficult work，so we should focus on it in the early research and development process.Conclusions In this paper，the problems of electromagnetic compatibility testing of medical X-ray machine are analyzed.In addition，a set of basic rectification process of X-ray machine electromagnetic compatibility is designed to solve common problems，shorten development cycle，reduce development and material cost，and improve product quality.