Generally speaking, kelp is not easy to digest, and may also lead to abnormalities in gastrointestinal function. Kelp is unique to seawater, which contains a large number of gelatinous substances, generally in the intake of digestion is relatively slow, and not easy to cook, for the gastrointestinal people may lead to the occurrence of indigestion. But kelp in the trace elements and mineral content is relatively rich, gastrointestinal function of normal people can be in daily life moderate intake, but must be cooked to avoid other problems. Therefore, it is recommended that people with poor gastrointestinal function try to eat some relatively light porridge food, avoiding the intake of indigestible food such as kelp, so as not to increase the burden on the stomach and intestines.