For the purpose of examining the effects of simulated acid rain on nutrient contents of plant tissues in Pintos densiflora seedlings and Forsythia koreana rooted cuttings, the experimental design of randomized block arrangement with three replications was implemented in the experimental field of Yesan National Agricultural Junior College. One-year-old Pinus densiflota seedlings and Forsythia korearaa cuttings were planted in the pots filled the mixed soils(nursery soil: forest soil of siliceous sandy loam=1 : 1 v/v) in the early spring of 1986. The regime of artificial acid rain, in terms of spray frequency per month and spray amount at single treatment per plot, was simulated on the basis of climatological data averaged from 30 years records. Simulated acid rain(pH 2.0, pH 4.0, and pH 5.5 as control) containing sulfuric and nutric acid in the ratio of 3 : 2(chemical equivalant basis) diluted with ground water were treated on the experimental plants under condition of cutting off the natural precipitation with vinyl tunnel, during the growing season(May 1 to August 31) in 1986. The results obtained in this study were as follow : ① As for the nitrogen contents in plant tissues, P. deusiflora increased significantly in one-year-old stembranch and root tissues, and F. koreana increased significantly in leaf and root tissues, as the pH levels of acid rain decreased. ② The available phosphate contents in root tissues of P. densiflora, and in leaf and root tissues of F. koreavaa were significantly decreased, as the pH levels of acid rain decreased. ③ K₂ O, CaO and MgO contents in plant tissues were significantly decreased in the both species as the pH levels decreased. And the effects of acid rain on F. koreana were higher than those of P. densiflora. ④ Sulfur contents of plant tissues in the both species were increased at pH 2.0 treatment. There were significant differences among three acid rain treatments in leaf and root tissues of P, densiflora, and in all parts of F. koreana. ⑤ In the effects of simulated acid rain on the both species and the tested soils, in general, F. koreana revealed higher sensitiveness than F. densiflora, and the lower pH levels of simulated acid rain were treated, the more sharp reaction was showed.