1. In the oil industry drilling, 0.5% xanthan gum aqueous solution can maintain the viscosity of the water-based drilling fluid and control its rheological properties, so that the viscosity of the high-speed rotating drill bit is extremely small, which greatly saves power consumption. The static drilling position maintains high viscosity, which prevents the well wall from collapsing and facilitates the removal of the cutting debris from the well.2. In the food industry, it is better than current food additives such as gelatin, CMC, seaweed gum and pectin. Adding 0.2% to 1% in the juice can make the juice have good adhesion, good taste, and control penetration and flow. ; As an additive to bread, it can make bread have good stability, smooth texture, save time and reduce costs; use 0.25% in bread filling, food filling and icing, can increase the taste and flavor of, the product structure is smooth, and the shelf life is prolonged , Improve the stability of the product to heating and freezing; in dairy products, adding 0.1% to 0.25% in ice cream can play an excellent stabilizing effect; provide good viscosity control in canned foods, which can replace part of starch, one part of yellow Raw gum can replace 3 to 5 parts of starch. At the same time, xanthan gum has also been widely used in candies, condiments, frozen foods and liquid foods.