Most members of family Ericaceae have a distinctive form of the symbiosis referred to as ericoid mycorrhiza, which appear to be able to alleviate certain environmental stresses and so facilitate the establishment and survival of Ericaceae. In order to understand and utilize the mycorrhizal potentials, and satisfy the requirement of ecological construction and horticulture production, ericoid mycorrhiza has attracted abroad attention in overseas. This paper summarizes the research advances on the structure of Ericaceous root, the diversity of ericoid mycorrhizal fungi and the effects of inoculation on host plants. The insufficiency and prospect of the mycorrhizal research are also discussed.