Usually, people with colds can eat seaweed in moderation, but not in large quantities over a long period of time. Colds are caused by viral infections, and some people with mild illnesses and good health can recover from them on their own, so they can take better care of themselves on a daily basis. Usually, people with colds can eat a moderate amount of seaweed, every 100 grams of seaweed contains 12.7g of water, 26.7g of protein, 15.4g of ash, 44.1g of carbohydrates, 1370.0mg of carotene and so on. Cold and flu people eat a moderate amount of purple cabbage can replenish the body’s required nutrients, and every 100 grams of purple cabbage can provide the body with 1,244KJ of energy, which is good for promoting the body to restore health. It is worth noting that people with colds should avoid eating large quantities of seaweed for a long time, so as not to cause nutritional imbalance, gastrointestinal burden and other counterproductive effects, which is not conducive to the health of the body. It is recommended that people with colds pay attention to the rationality of the diet to ensure a balanced intake of nutrients. People with colds should also drink a lot of water, increase or decrease clothing according to the temperature change in a timely manner, and follow the doctor’s instructions to use medication if necessary.