Dead crabs or hairy crabs are not edible.

When crabs or hairy crabs are dead, it will cause the reproduction of many pathogenic microorganisms and parasites, and if you eat the dead crabs, it will cause diarrhea, or cause intestinal infectious diseases, which is hazardous to your health.

Because when crabs or hairy crabs are dying or have died, the histoxic acid in the crab body will decompose to produce histamine. Histamine for a toxic substance, with the prolongation of the time of death, the crab body accumulates more and more histamine, more and more toxic, even if the crab cooked, this toxin is not easy to be destroyed. Therefore, never eat dead crabs.

So, dead crabs or hairy crabs can not be eaten.