MSG and Chicken Bouillon are both commonly used to refresh seasonings, and the main ingredient of both is monosodium glutamate, although there are differences in specific ingredients and appearance. 1. Ingredients: The main ingredients of MSG are monosodium glutamate and salt. The main ingredients of chicken essence are monosodium glutamate, salt, sugar, starch, chicken powder, coloring and so on. 2. Taste: Chicken essence is more fresh than MSG in practical application. The fresh taste of MSG is more simple, while chicken essence is more comprehensive in its taste because it contains a variety of flavoring agents such as chicken powder. 3. Appearance: Chicken essence is usually in the form of opaque yellow or yellowish granules; MSG is most commonly in the form of rectangular crystal granules. Chicken essence and monosodium glutamate (MSG) sold in the market comply with food safety standards, and the correct consumption of MSG and chicken essence will not produce side effects, but excessive long-term intake may cause an increased risk of chronic diseases, so it is important to pay attention to the control of MSG and chicken essence intake in daily cooking.