Abstract:Characterization of magnetism and iron oxide minerals for Quaternary red earth was investigated by mineral magnetic measurements, X-ray powder diffraction and transmission electron microscopy. The data indicated that there were significant differences in magnetic susceptibility(χ),frequency dependent susceptibility (χfd), anhysteretic remanent magnetization, saturation isothermal remanent magnetization (SIRM) and demagnetization parameters between homogeneous horizon and reticular horizon for red earth.