The hazards of dry ice (i.e. solid carbon dioxide) to the human body include frostbite, stomach irritation, and effects on breathing. 1. Frostbite: Dry ice is a solid state of carbon dioxide, generally more at -78°C. If you accidentally touch dry ice, cells and tissues will be frostbitten, resulting in swelling and pain. Even if it is edible grade dry ice, it is only a small amount as an auxiliary material for food, and the human body can not touch it directly to avoid frostbite. 2. Stimulation of the stomach: If it is edible dry ice is usually non-toxic, with fewer impurities, it can be used in biomedicine, food preservation, catering cuisine and so on. However, when it is used to make carbonated beverages, it needs to be consumed in moderation. If a large amount of this carbonated beverage is consumed for a long period of time, the carbonic acid may stimulate the stomach, which may lead to gastric ulcers, gastritis and other stomach diseases. 3. Impact on breathing: A small amount of carbon dioxide stimulates human respiration, but high concentrations of carbon dioxide can inhibit the respiratory center. A large amount of inhalation can appear chest tightness, dizziness, shortness of breath and then gradually become respiratory depression and other phenomena, carbon dioxide inhalation is not timely treatment is likely to lead to blurred consciousness, coma phenomenon. We should use dry ice in a safe range, and pay attention to avoid bodily harm when using it.