Acid rain, as one of the major environmental problems man is confronted with, is becoming a hot spot in the study of soil science and ecology. So far, most related researches and achievements have showed that acid rain has certain impact on functions of a soil ecosystem, such as leaching of soil base-exchangeable ions, heavy metals and microelements, nitrogen, contents of sulfur and phosphorus nutrients, soil acidification, population and activities of soil microbes, soil buffer capacity, soil sensitivity to acid rain, soil structure and weathering status of soil minerals, and so on. A review was presented of advancements in the researches on impacts of acid rain on functions of soil ecosystems, with an attempt to provide other researchers involved in the acid rain area with some information for reference.