The quick-frozen crabs you buy are edible.

There are quick-frozen crabs for sale in supermarkets. These crabs are frozen to death, but they are quickly frozen to death when they are still alive, and then stored in an environment of minus 18 degrees. Under this low temperature condition, dead crabs will not have a large number of bacteria multiplying. You only need to defrost and heat them before eating, but the taste and texture will be poor.

However, it is difficult to tell how long crabs have been dead since they are generally stored in the freezer at home. In addition, due to the unstable temperature of the home refrigerator, it is recommended not to eat them to avoid adverse effects on health.