1. In petroleum industry drilling, 0.5% xanthan gum aqueous solution can maintain the viscosity of 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, while in relatively static However, the high viscosity is maintained at the drilling site, which prevents the collapse of the well wall and facilitates the discharge of the crushed stone out of the well. 2. In the food industry, it is better than the current food additives such as gelatin, CMC, alginate and pectin, adding 0.2% to 1% in the juice to make the juice have good adhesion, good taste, and control penetration and flow ;As an additive for bread, Chemicalbook can make bread with good stability, smooth texture, save time and reduce cost; use 0.25% in bread filling, food filling and sugar coating, which can increase taste and flavor, smooth product structure, and prolong shelf life , to improve the stability of the product to heating and freezing; in dairy products, adding 0.1% to 0.25% to ice cream can play an excellent stabilizing effect; in canned food, it provides good viscosity control, which can replace part of starch, a part of yellow Original gum can replace 3 to 5 parts of starch. At the same time, xanthan gum has also been widely used in candy, condiment, frozen food and liquid food.