Crab and egg can be eaten together, there is no conflict between the nutrients of the two, and they will not interact to produce harmful substances, but it is not recommended to eat too much. Crab is rich in protein, fat, cholesterol, amino acids, calcium, sodium, phosphorus, potassium and other nutrients, of which every 100 grams contains 17.5 grams of protein and 126 milligrams of calcium, moderate consumption can supplement the required protein and calcium. Eggs mainly contain protein, fat, vitamin B4, calcium, sodium, potassium and other nutrients, of which each 100 grams contains 13.3 grams of protein, and rich in leucine, lysine and other amino acids, moderate consumption can supplement the body’s energy and protein. Crab and egg are not conflicting in nutrient composition and do not produce toxic side effects, so they can be eaten together. If you are allergic to crabs and eggs, you should not eat them alone or together. If you experience discomfort after eating them together, it is recommended that you seek medical attention.