1. If the crabs you just bought need to be preserved for 3-5 days, you can use a deep wash basin, a large plastic bucket or a bathtub at home, and then pour in clean water. If tap water is used, it is recommended to dry the tap water for about 2 hours. Don't put the water too deep so that the crab can stand up.

2. If it needs to be stored for a long time, it is suggested to put a small amount of small fish and shrimp in the culture water, which can make the crabs survive for 7 days or even longer, and the survival rate of good quality hairy crabs can reach over 95%.

3. It can also be stored in the refrigerator. First, tie the crab feet and pliers and put them in the cold storage layer of the refrigerator. Cover the crab with a wet towel. Touch the crab's eyes with your hands every 1 day. If you feel dull, you need to eat it immediately. Sensitive crabs can continue to be preserved.

Besides live crabs, cooked crabs are also acceptable. Put the steamed crab in a clean washbasin and cover it with a wet towel. Note that the temperature should not exceed 20℃, and they can be kept for 1-2 days. You can also wrap the cooked crabs with plastic wrap, put them in the refrigerator for 3-4 days, take them out and cook them with water before eating. You can also peel off the crab meat and store it in the refrigerator, and use it to make dishes such as crab bean curd and crab steamed buns.