Crab and eggs can be eaten together, but in moderation. Both crab and eggs are high-protein foods, both of which are high-quality proteins that do not cause adverse reactions in the body when consumed together. However, it is important to pay attention to the amount of protein consumed and the combination with other foods, as consuming too much may lead to excessive protein intake in a short period of time, which may increase the burden on the stomach and intestines, and may lead to indigestion. Patients with abnormal kidney function are not recommended to eat them at the same time, because excessive protein intake may increase the burden on the kidneys, and excessive protein intake may also increase the cardiovascular load, so patients with cardiovascular disease are also not recommended to eat large amounts at the same time. After eating crab or eggs, avoid foods rich in tannic acid, such as persimmons and tea, because the protein in crab or eggs will react with tannic acid to produce insoluble substances such as tannins, which will affect the body’s digestion and absorption of food and may cause a series of indigestion symptoms such as abdominal distension, abdominal pain and diarrhea.