The annual wild soybean (Glycine soja) played an important role in broading soybean germplasm and improving soybean gene pool.This paper discusses the advances in 3 aspects of salt tolerance in wild soybean,including resource survey and excellent characters,mechanisms of salinity tolerance and the possibility of using wild soybean resources to improve cultivated soybean salt tolerance.Recent researches about salt tolerance in wild soybean such as anatomical structure,physiological mechanisms and molecular biology are summarized.Through the salt glands in leaf epidermis and the repellency of Na⁺ and Cl^-,the wild soybean achieves the antagonist of saline environment.Strong antioxidant capacity,soy isoflavone metabolism and salt tolerance gene are also important reasons for its adaptation to saline environment.The strategies for further research are genetic basis on salt tolerance and the species protection,in order to explore the innovative value.