医用电气设备漏电流的检测是安全检测的重要项目，对检测仪器的要求很高，国家标准中对此有明确的规定。然而，这项检测经常被误解为普通的电流测量，从而降低了检测结果的可靠性，成为不安全的隐患。本文对医用电气设备漏电流检测的特殊要求及在研制检测仪器中所采取的关键技术进行了详细的阐述。 Leakage current detection of medical electrical equipment is an important item for safety testing. The requirements for testing instruments are very high, and there are clear provisions in the national standards. However, this detection is often misunderstood as an ordinary current measurement, which reduces the reliability of the test results and becomes an unsafe hidden danger. This article describes in detail the special requirements for leakage current detection of medical electrical equipment and the key technologies used in the development of testing instruments.