Abstract: As a functional link between soil and roots，arbuscular mycorrhiza Fungi can not only give a direct influence to the physiological function, such as the plant mineral nutrition, the growth, the natural resistance, the disease resistance and many other aspects, but also take an indirect impact on the growth of the host plant through the structure of the soil and the biotic community. This article makes a summary on it in the above various aspects brief application. In addition, the viewpoints those use the molecular biology technology for AMF taxonomy system and so on for the further study to AMF