The corrosion behavior of Zn in simulated acid rain atmospheric environment was studied with a simulating raining system self-designed, which can control rainfall and pressure close to the actual level. After zinc corroded in simulated acid rain atmospheric environment corrosion time of 48, 96, 144, 192 and 240 h, the morphologies and the composition of corrosion products, cross section of rust layers and the electrochemical characters of rust layers were investigated by scanning electron microscopy （SEM）, energy-dispersive spectroscopy （EDS）, X-ray diffractometry （XRD） and electrochemical techniques. The results show that the corrosion products formed on the surface of zinc have good protection, but the degree of protection is limited, with the main product components for Zn（OH）2, ZnSO4, Zn_4SO_4（OH）6·3H_2O and Zn_5（OH）8Cl2·H2O. The protective effect of the rust layers is first enhanced, and then weakened as increasing the corrosion time.
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