本文报导了平头电极发射光谱分析法测定化探样品中痕量银的研究。结果表明，采用平头电极原子发射光谱分析法测定痕量银比用尖头电极分析结果的精密度显著提高。以国家标准样品作为低含量银的测定标准，成功地避免了样品粘污，方法检出限为０．０１μｇ。经过７０００余件地球化学样品中银的测定证明，该方法分析结果准确可靠。 In this paper, the research on the determination of trace silver in geochemical exploration samples by using flat electrode emission spectrometry has been reported. The results showed that the precision of the determination of trace silver by the tip electrode spectrometry was significantly improved compared with the tip-electrode analysis. Taking the national standard sample as the determination standard of low content of silver, the sample smear was successfully avoided, and the detection limit of the method was 0.01 μg. After more than 7000 geochemical samples of silver test proved that the method is accurate and reliable.