1, crab gills: As shown in the picture, two rows of soft things grow on the crab's abdomen, which are used by crabs to filter water quality and are very dirty.

2, crab intestines: there is crab excrement, and there are black things at the crab yellow and crab meat.

3, crab stomach: the triangular Dongdong in crab yellow,

4. What the crab's stomach looks like after it is opened.

5, crab heart: the crab is hexagonal, and the thickest yellow paste in the middle of the crab belly must not be eaten.