Hairy crabs are usually preserved in the following ways. If you buy it in an ordinary vegetable market, it is not bound and has good vitality. You can put it in an empty bucket, add a little water to avoid overflowing crabs, and then put it in a ventilated and cool place, which can generally survive for 5-7 days. If the crabs bought in supermarkets and brand stores are bundled, you can sprinkle some water on the fresh-keeping layer of the refrigerator and cover it with a wet towel, which can generally survive for 3-5 days.

If it is a blue crab, don't put it in the refrigerator. It is easy to die in a short time in the refrigerator. Generally, the blue crab is below 5 degrees, and it is easy to die for a short time above 39 degrees. So blue crabs are usually put in empty barrels. Don't put water on it. Sprinkle some salty fresh water (water+a little salt) on it and put it in a relatively ventilated and cool place. Generally, it will survive for about 3-5 days.

Of course, whether crabs can last long depends on the vitality of hairy crabs. Those with weak vitality can be eaten first, and those with strong vitality can be stored for several days. Crabs may lose meat during storage. In short, it is recommended to eat as soon as possible.