Can't be eaten, because live crabs can expel bacteria through the body's metabolism, if the crab is once dead, the bacteria in its body will proliferate, and some bacteria produce toxins, which can easily cause food poisoning and lead to vomiting and diarrhea after eating.

The green crab is one of China's precious aquatic products. Its meat flavor is delicious and unique, extremely rich in nutrition, known as the delicacies on the banquet table, with high edible and medicinal value, especially the female crab (red sea-crab, high crab) with mature gonads after mating has the reputation of ginseng in the sea, and it is the high-level nourishment for women in labor, the old, the young and the physically weak, and the crab shells can be made into chitin, which is a kind of widely-used industrial raw material.

Expanded:

Four parts of the crab body do not eat

1, crab stomach

Open the crab shell, you can see in the shell stained with some crab yolk, the crab stomach is hidden in the shell of the crab yolk. Use a spoon to open the crab yolk, gently suck the crab yolk wrapped on top, and the exposed triangular bag is the crab stomach. Crabs feed on small aquatic organisms, water plants and decaying animals, so crab stomachs are dirty and not recommended.

2. Crab gills

The two rows of gray fan-shaped soft tissue on the crab's body after opening the shell are the crab gills. Crab gills are the respiratory system of the crab and are also not recommended for consumption.

3, crab heart

Crab heart is a white hexagonal shape, it is generally located in the center of the crab a black membrane coat, connecting the two pieces of crab gills in the middle of the white material is the crab heart. The heart of the crab is the coldest part of the crab, so you should remember to remove it when eating the crab.

4, crab intestine

Crab intestine is located in the lower abdomen of the crab that can be broken open triangle, open the triangle can be seen at the top of the crab body connected to a black line, it is the crab intestine. Crab intestines also belong to the crab's digestive system, and it is recommended that they be removed and not consumed.

Xinhua - Why dead crabs cannot be eaten