Abstract: More than 200 kinds of nonlegumes,known as symbiotic nitrogen fixation with actinmyces, were found to be simultaneously symbiosis with mycorrhizal fungi.Therefore,those nonlegumes have not only the high and long nitrogen fixation ability of legumes,but also the vigorous and rapid growth and strong stress resistance characters,and can be used as pioneer plants to improve adverse ecological environment.Great benefits will be achieved from the research and utilization of those nonlegumes and actinmyces.