The ECG-6511 and ECG-6151 electrocardiographs from Japan(including domestic ones)are widely used in medical and health institutions.Based on this,this article mainly analyzes in detail the faults of the recording pen offset,up and down swinging,and trembling of the electrocardiogram machine,and proposes specific maintenance methods.Relevant personnel should regularly maintain and inspect the electrocardiogram machine to ensure that it is in good working condition.Use high-quality lead wires and accessories to reduce malfunctions caused by accessory issues.Train operators to ensure that they can use the electrocardiogram machine correctly and in a standardized manner.