The mixed or single solution with different Fe-Mn molar concentration（0-0.08 mol/L）with a pH value of 3.5 to leach the soil columns of brown red soil for 40 times was used to study the characteristics of iron-manganese migration and deposition in alternating of wet and dry conditions with different leaching ways (simultaneously or alternately).Results showed that the pH of soil column leachate decreased gradually with progress of the leaching.After leaching 40 times,the pH of leachate was lower than that of the leaching solution,while the contents of iron and manganese oxide were similar in leachate and leaching solution.After leaching,iron and manganese oxide in the soil was in the order of the free state>amorphous state>the complex state.The deposition of iron in the soil columns was greater than that of manganese,of which the amount of free state and amorphous state iron were much higher than the corresponding amount of manganese.The content of complex state Fe and Mn were relatively close.Iron deposition amount in soil columns treated with simultaneously iron and manganese leaching were higher than that of the corresponding alternate leaching,while the amounts of manganese deposition were higher than that of iron.In alternate leaching treatments,the higher the concentrations of leaching solution of manganese,the greater the amounts of iron deposition in soils.Exchangeable sodium,potassium,calcium and magnesium ions were lost with the leaching of manganese,among which the lost amounts of calcium and magnesium ions were larger.