对养殖日本鳗、欧洲鳗和美洲鳗的4口露天土池逐月进行水化学测定。2口日本鳗养殖池的pH分别为9.1和9.0,透明度为24和31cm,氨氮为0.92和0.56mg/L;欧洲鳗养殖池的pH为8.6,透明度为23cm,氨氮为0.69mg/L;美洲鳗养殖池的pH为9.0,透明度为41cm,氨氮为0.83mg/L。分析了鳗池化学指标的时间变化规律及原因,并从健康养鳗的角度对池水化学性状进行了评价。 Hydrochemistry was performed monthly on 4 open-air soil ponds that breed Japanese eels, European eels and American eels. The pH values ​​of two Japanese eel aquaculture ponds were 9.1 and 9.0, the transparency was 24 and 31 cm, the ammonia nitrogen was 0.92 and 0.56 mg / L respectively. The pH value of European eel aquaculture pond was 8.6, the transparency was 23 cm and the ammonia nitrogen was 0.69 mg / L. Eel culture pond pH 9.0, transparency of 41cm, ammonia nitrogen is 0.83mg / L. The regularities of the chemical indicators of the eel ponds were analyzed and the reasons were analyzed. The chemical properties of the pond water were evaluated from the perspective of healthy eels.