Crabs should have their gills removed before they are cooked. They are inedible. Crab gills are two rows of soft things that grow like eyebrows in the abdomen of crabs. They are the respiratory organs of crabs, which are used to filter water quality and are very dirty. Don't eat the triangular crab white under your cheeks. When eating, you must remove four substances: crab gill, crab heart, crab stomach and crab intestine, which contain bacteria, viruses and sludge.

Crab poisoning is mainly due to eating dead crabs. Be sure to be fresh when buying, and then deal with cooking. If you are dead when you buy it, the bacteria you carry will multiply faster, produce toxins faster, and the toxic amines produced by decomposition and corruption will increase, which may cause gastrointestinal discomfort or even food poisoning after eating.

Extended data:

Crab meat is cold and should not be eaten more. People with spleen and stomach deficiency and cold should pay special attention to avoid abdominal pain and diarrhea. Generally, one or two crabs can be eaten, and it is best to drink a cup of ginger tea to dispel the cold after eating crabs.

Do not drink tea water when eating crabs and within 1 hour after eating crabs. Because boiling water will dilute gastric acid, tea will solidify some components of crab, which is not conducive to digestion and absorption. Don't mix crabs with persimmons, because tannic acid and other ingredients in persimmons will solidify the meat protein in crabs, which may cause adverse reactions such as vomiting, abdominal pain and diarrhea.

Crabs should be steamed and eaten now, not stored. In case you can't finish eating, the rest must be kept in a clean, cool and ventilated place. When eating, you must return to the pot and cook it thoroughly.

People's Daily Online-Eat 6 crabs in buffet and 4 smelly dead crabs or food poisoning.

People's Network-Don't eat four parts of crabs! Counting the six taboos of eating crabs