Abstract: A simulated study with different concentration of artificial wastewater shows that the wastewater with normal concentration and five times of it had no harmful effect, but promoted the growth of Avicennia marina seedlings. While with ten times of normal concentration, the wastewater had an obvious impact on the eco-physiological indexes of plant, e.g., the chlorophyll content, catalase activity, free proline content, water content and relative electric conductivity of leaves, the plant biomass, and the stem diameter and its hight growth, but the seedlings could still maintain its normal growth. It is indicated that A.marina had a stronger adaptability and endurance to wastewater.

Key words: Artificial wastewater, Mangrove, Avicennia marina, Eco-physiology