A field experiment was conducted to study the uptake and transformation of different selenium fertilizers by potato (cv. Zao Dabai) and the effects of these fertilizers on potato yield and quality. The experiment included four fertilizer treatments: sodium selenate fertilizer (S), biological carbon selenium fertilizer (C), slow-release, water absorbent selenium fertilizer (W) and an unfertilized control (CK). Results indicated that plant selenium concentrations gradually decreased as potato plants matured. Selenium concentrations in different potato organs generally decreased in the order roots > stems > leaves. However, by maturity, selenium concentrations decreased in the order leaves > stems > tubers. W treatments initially increased selenium contents, inorganic Se and organic Se of potatoes, however, yield, the organic Se transformation rate, crude protein, the reducing sugar and Vc of potatoes initially increased and then decreased as soil selenium concentrations increased. These three kinds of selenium fertilizers decreased starch contents of potatoes at the low selenium concentration (0.126 kg/hm²), then it could not influence starch contents of potatoes. Compared with CK, When applied in proper amounts(0.379 kg/hm²), all three selenium fertilizers increased yield by 4.87%-5.44%, tuber crude protein by 12.18%-20.03%, the reducing sugar by 6.45%-12.90%, vitamin C by -0.54%-3.11%, organic Se transformation rate by 13.00%-15.10% and starch content by -0.73%-1.12% of potatoes. Considering selenium contents, the yield and qualities of potatoes, the effects of W treatments were better than B treatments and effects of S treatments were the worst.