In this paper, malachite corrosion products were synthesized in excessive CO2 atmosphere environment by a new method, which simulated the bronze corrosion process by high temperature steam of salt solution. The chemical compositions and microstructures of the corrosion products were characterized systemically by physical and chemical instrumental techniques including optical microscopy, scanning electron microscope, energy dispersive spectrometer, X-ray diffraction, and Raman microscopy. The experimental results revealed that the characteristics of corrosion products generated in different atmosphere environments, which consist of excessive CO2 and H2O. The growth mechanisms of the malachite corrosion product generated in different atmosphere environments and the suggestions for preservation of the ancient bronzes were proposed.