MSG is used in many countries in the world. As a flavoring agent, MSG is really used in East Asian countries, especially in China and Japan. Especially in countries and regions with relatively developed economies. Monosodium glutamate can increase the freshness of food and make people appetite. Westerners believe that eating monosodium glutamate is harmful to health, but practical science has proved that monosodium glutamate, the main component of monosodium glutamate, is made of pure grain and has no toxicity in itself, so it will not be harmful to health when used as a food additive. However, because this idea has a long history and eating habits are difficult to change, westerners still use monosodium glutamate less.