From the point of view of nutrition and dietotherapy, crabs are cold and contain a lot of protein, fat, vitamins and amino acids. While milk is flat and rich in protein and calcium. There is no difference between the two kinds of nutrition, and there will be no conflict in eating, so you can drink milk when eating crabs.
However, it is best not to drink milk immediately after eating crabs. Because crabs contain a lot of protein and fat, it takes a while for these substances to be digested by human body. If crabs eat too much, drinking milk immediately after eating crabs will increase the burden on the stomach, affect the absorption of protein and fat by crabs, and even cause discomfort such as abdominal pain and diarrhea. Therefore, it is recommended to eat crabs for a period of time (2~3 hours) before drinking milk.