Abstract: To provide the basis for the arid area for planting flue-cured tobacco supporting better,7 treatments of set of plastic film mulching （ck）,straw mulching,plastic film mulching,traw mulching ＋water＋water-retaining agent, straw mulching,straw mulching after film, bare-root ＋ water-retaining were set up by using randomized block design under field conditions,effect of the mulching on Ninger flue-cured tobacco growth, yield and quality were studied, the results showed that：plastic film mulching＋water-retaining agent, plastic film mulching, straw mulching, straw mulching and water retention agent,before the film covered with straw,improved the growth of tobacco plant environmental conditions, the effect of moisture,fertilizer and temperature increased significantly,effective reducing the tobacco growth period of drought stress, promote the tobacco long fast; straw mulching and single application of water-retaining agent,with drought time prolonged drought resistance forces weakened, straw mulching effectively reduced tobacco bottom drying phenomenon,with straw mulching and straw mulching ＋ water- retaining agent had good comprehensive performance.