Vegetable,wheat,cotton and melonscrops were tested with the underground film technique. The result shows that under the traditional planting measures,the yield of vegetable with underground film increased by 64. 9 %compared with the contrasting field,wheat 65. 0%,melons crops 79. 0%,and the increment of water use efficiency is 106. 2 %,56. 3 %and 162. 1 %separately. So the underground film technique is one of the new agricultural techniques,which could increase the yield,water-saving and fertilizersaving.