Activation and migration and their geochemical characteristics of elements under simulated submerged condition were studied, with red soils and fluvo-aquic soils as substrates. The results showed that leached elements came from different soil parts. The activities of Fe, Pvln, Ca and Mg were strengthened, and their migrating abilities increased. Mieration coefficient of Mn was nearly as large as that of Ca and Mg. The orders of elements migration in the two soils were different, in the red soil, being the order of Ca>Mn>Fe>Mg, Na>K>Si, P>Al, but Ca>Mg>Mn>Na>K, Fe>P>Si>Al in the fluvo-aquic soils.