Abstract: Effect of elevated atmosphericCO₂〖KG*3〗(780 μmol·mol ^-1) on the absorption and transportation of secondary nutrient elements (calcium, magnesium, sulphur) and micronutrient elements (iron, manganese, zinc, molybdenum and boron) in oilseed rape at the stem elongation stage were studied by greenhouse simulated method. Compared with the ambient CO₂ condition, the content of Zn in stem was increased and the contents of other nutrient elements were decreased under the elevated atmosphericCO₂ with no nitrogen (N) application; the contents of Ca, S, B and Zn were increased, and the contents of Mg, Mn, Mo and Fe were decreased under the elevated atmosphericCO₂ with N application (0.2 g N·kg^-1 soil); except the content of Mo in leaf was increased, the contents of other nutrient elements were decreased under the elevated atmosphericCO₂ with two levels of N application. Compared with the ambient CO₂ condition, the amounts of Ca and S relative to the total amount of secondary nutrient elements in stem and the amounts of B and Zn relative to the total amount of micronutrient elements in stem were increased under the elevatedCO₂ treatment with both levels of N application, and the corresponding values of Mg, Fe, Mn and Mo were decreased; noN application treatment increased the proportion of Ca distributed into the leaves, and the proportion of Mg distributed into leaves was increased by the normalN application level; the proportions of Mn, Zn and Mo distributed into the leaves were increased at both N application levels. Without N application, the elevation of atmospheric CO₂ increased the transport coefficients of S_Fe,Mo and _SS,B, but decreased the transport coefficients of S_Mg,Fe, S_Mg,Mn and S_S,Fe, indicating the proportions of Mo, S transported into the upper part of plant tissues was higher than that of Fe, and the corresponding value of B was higher than that observed for S, the corresponding value of Mg was higher than that of Fe and Mn. Under normalN application, the elevation of atmospheric CO₂ increased the transport coefficients of S_Mg,Fe, S_Mg,Mn and S_S,B, but decreased the transport coefficients of S_Ca,Mg, S_Fe,Mo and S_S,Fe, indicating the proportions of Fe, Mn and Ca transported into the upper part of plant tissues was higher than that of Mg; the corresponding value of B was higher than that observed for S, the corresponding value of Fe was higher than that of Mo, and the corresponding value of S was higher than that of Fe.