Field experiment was conducted to study the effects of selenium(Se)fertilizer on Seenrich reaction and Se absorption,distribution of spring wheat.The results showed:(1)To reach the standard of Seenrich in spring wheat grain,appropriate foliar spray concentration of Se fertilizer was 10~20 mg/kg at jointing stage and booting stage,respectively;it was 40~50 mg/kg at booting stage.（2）With foliar spray of Se fertilizer in three spray period（jointing stage,booting stage and milking stage）treatments,the Se content in grain all reached the standard of Seenrich,the appropriate period was from booting stage to milking stage.(3)The change of Se content of the whole plant was 0.062~0.187 mg/kg in the growth period of spring wheat,with average of 0086 mg/kg.The Se content in all organs of spring wheat could be improved effectively by foliar spray of Se fertilizer.Se accumulation of different organs was leaf>grain>shell>stem.(4)Se content and absorption velocity in whole plant were calculated by cubic curve and quadratic cubic,respectively.The fastest absorption velocity was 0.030 5 μg/(d·plant)and could be improved by 9.5 times,4 days earlier compared with the CK treatment.