Ice cream contains carrageenan. The main harm of carrageenan to human body is that it is easy to degrade in high temperature and acidic environment, and the degraded components may have certain safety hazards to human body. According to related research experiments, excessive consumption of carrageenan will inhibit the absorption of potassium or other minerals, causing gastrointestinal discomfort. Carrageenan is a food additive. When added in the process of making ice cream, soft candy, jelly and other foods, the produced jelly and soft candy are more elastic and not sticky, and the produced ice cream will be more delicate and smooth, with better formability and melting resistance. Carrageenan is actually a colloid extracted from red algae such as Eucheuma and Salsola. This colloid has good hydrophilicity, so it is also called Eucheuma and Salsola salsola. In fact, there are strict standards for the use of carrageenan, and moderate consumption of food made of carrageenan will not affect the human body.