Guar is an important legume crop, native to India, currently guar beans in the market share is rising year by year, its seed endosperm containing guar gum, mainly used in the oil exploration industry, formulated into water-based fracturing fluid, can increase the permeability of oil-bearing strata to improve oil production has a significant effect. In addition, guar gum is also widely used in papermaking, textiles, food, spices, drugs, as well as mining and metallurgical industries, guar beans and edible, green beans for vegetables, the seeds contain a large amount of protein and a small amount of fat, nutrient-rich, can be used in place of food, the plant can be used as fodder and green manure. At this stage, the supply of guar gum on the market is not large, there is a broad market space. On the other hand, due to the guar beans in some areas have not been promoted, each producing area only a small number of growers in the planting of guar beans, resulting in a lack of supply on the market. Although China's cultivation of guar beans has nearly three decades of history, but still can not solve the current market guar gum in the food industry and other aspects of the application of the development needs. Xinjiang is located in the northwestern inland arid zone; rainfall is scarce, high evaporation, the region is rich in light and heat resources, the temperature difference between day and night, its soil and water environment and temperature and heat conditions and guar origin is very similar to the unique geographic advantages of production, cultivation of guar beans, but so far in the Xinjiang region of the guar beans planting promotion is relatively small, and therefore has a broad prospect of the comprehensive use and development. Optimizing water and nitrogen management is an effective way to achieve high crop yield and efficient use of water and nitrogen. In order to explore the water and nitrogen management mode suitable for drip irrigation of guar bean under film in Xinjiang area of China, four irrigation levels were set:W1:1170 m3/hm2、W2:1530 m3/hm2、W3:1890 m3/hm2、W4:2250 m3/hm2;two nitrogen application levels:N1:30 kg/hm2、N2:50 kg/hm2. The effects of water and nitrogen interaction on growth index, yield, water and nitrogen utilization efficiency and quality of Guar bean under drip irrigation under film were studied. The results showed that it is feasible to grow guar beans in the oasis of the arid zone of Xinjiang, and the coupling effect of water and nitrogen under drip irrigation and integrated water and fertilizer treatments had a highly significant effect on the yield, irrigation water use efficiency, nitrogen fertilizer bias productivity, and galactomannan content of guar beans. Under the irrigation conditions of W1~W3, the increased application of nitrogen fertiliser could effectively mitigate the negative effects of drought stress on the crop, improve the quality of single plant and thousand grains of the crop, and thus ultimately increase the crop yield. Overall, the yield, quality and water and nitrogen use efficiency of guar beans were all at a high level under appropriate water and nitrogen intercropping conditions, while excessive water and fertiliser inputs did not lead to a sustained increase in yield, quality and water and nitrogen use efficiency. Based on principal component analysis and membership function analysis, it was concluded that the irrigation amount of 1890 m3/hm2 and the nitrogen application rate of 50 kg/hm2(W3N2) were the optimal treatment. The study can provide a theoretical basis for promoting high yield, high water and nitrogen use efficiency of Guar bean under mulched drip irrigation in Xinjiang.