The subtropical yellow brown soil column was leached with 0-0.08 mol/L of pH 3.5 (molar concentration ratio of 4︰1, 2︰1 and 1︰1) FeSO₄ and MnCl₂ single or mixed solution for 40 times (7 days interval each time） to study the leaching and deposition characteristics of iron and manganese in soil under alternating dry and wet conditions. The content changes of pH, Fe and Mn of the leached solution, the content of Fe, Mn, Ca and Mg in the soil were analyzed. The results showed that the pH of leachate from soil column treated with Fe and Mn decreased by 1.10-2.68 with the increase of leaching times, even lower than that of leaching solution. The content of iron in the leachate was lower than that in the leaching solution, while the content of manganese in the leachate was opposite after 7 times of leaching. The total amount of Fe and Mn, the content of free and amorphous iron oxides in the soil increased at the first stage (20 times) and the second stage (40 times) of leaching. The content of iron and manganese oxides in the soil increased after leaching with high concentration of iron and manganese solution. The highest content of free iron and manganese oxide was 89.14 mg/g and 13.35 mg/g, respectively. Iron oxides were easier to form than manganese oxides under the alternate wetting and drying leaching conditions. The contents of iron oxides and manganese oxides were higher in the upper layer (5 cm) and the lower layer (25 cm), respectively. The content of Ca and Mg in soil after being leached decreased by 0.45-4.89 g/kg and 8.68-14.45 g/kg, respectively.