Mungbean as experimental plant was investigaed by means of sand culture containing three levels of water to determine the influence of VA mycorrhiza on the host plant growth and its water use.The experimental results showed that inoculatlag with VA mycorrhiza was beneficial not only to uptake of phoephorw by plant,but sisa to promoting plant growth.amount of water used by mungbean inoculated with mycorrhiza to produce one gram of dry matter was as low as half of that by controlled plant.It was implied that the efficiency of water used by the host plant inoculated with mycorrhiza was increased by 100%.In this paper,the growth and development of mycorrhizal and non-mycorrhizal plants in three different water levels of sand culture were described.The water consumed by plant growth in the whole growing period was measured and the experimental results were analysed and discussed.