结合宝珠寺水电站接地网布置特点，全面介绍了测试接地电阻的原理、技术和质量保证措施，为类似工程如何准确、安全、简捷、全面以及经济地对其进行测试提供参考。 Combined with the layout characteristics of the grounding grid of Baozhusi Hydropower Station, this paper introduces the principle, technique and quality assurance measures of grounding resistance in an all-round way, which can provide reference for similar projects to test accurately, safely, concisely, comprehensively and economically.