It is well-known that acid rain are widespread contaminants in the environment. Many researches about acid rain focused on physiological characteristic, while much more information is required concerning mineral elements changes of plants. Through potted planting experiment, Cinnamomum camphora seedling which were planted in pots were treated with three different pH values（3.0,4.0,5.0）of simulated acid rain. The results showed that the mineral element content varied to a certain extent. The content of Nitrogen，Phosphorus, Calcium, Magnesium, Iron, Aluminum, Copper, Manganese and Nickel was relatively higher in the treated plants than those without treatment, but the content of Carbon, Potassium and Zinc was lower. The content change of Sulphur, Cadmium and Lead trends as follows: Increasing for Sulphur, Cadmium and decreasing for Lead under pH3.0 treatment. For pH4.0 treatment, the content of Sulphur, Cadmium and Lead fell down. Under treatment of pH5.0, content of Sulphur, Cadmium ascended while content of Lead descended. Analysis showed that a negative one between pH concentration and content of Nitrogen. Manganese was significant. This study can offer basic theory for choosing the greening tree species in Southern cities.