Abstract: This paper deals with acid precipitation effects on growth and yield of wheat, rice, soybean and Chinese cabbage. Simulated acid precipitation contained known concentration of ions of natural acid precipitation in Southern China. The pH values of simulated acid precipitation were 5.6, 4.5, 4.0, 3.5, 2.5 and 2.0.The results indicated that visible damage threshold of soybean and Chinese cabbage was 2.5 of pH value, and the visible damage thresholds of rice and wheat were 2.0 and 3.0 pH values, respectively. Conductivity of soybean and Chinese cabbage increased with decreasing pH value of acid precipitation. A 3.5 pH value acid precipitation could cause a reduction in the chlorophyll content in Chinese cabbage, a 3.0 pH value acid precipitation could cause a reduction in the chlorophyll content in soybean and wheat. The Ratio of chlorophyll a to chlorophyll b was changed.A pH 3.5 pH value acid precipitation inhibited the growth of Chinese cabbage, and a 3.0 pH value acid precipitation inhibited the growth of wheat and soybean. A pH 3.5 pH value acid precipitation caused yield reduction of wheat and Chinese cabbage. A 3.0 pH value acid precipitation caused yield reduction of soybean. Growth and yield of rice were not affected by a 2.5 pH value acid precipitation. The yield reduction of wheat and soybean resulted from reduction of seed weight was mainly caused by acid precipitation.