1. Refrigeration: Tie the crab claws and legs with cotton rope or thin cloth, and then put them in the refrigerator for refrigeration. You can cover the crab shell with a wet towel to keep it moist, and the crab can live for 3-5 days.

2. Plastic bucket storage at room temperature: prepare a plastic bucket with a height of 30-50 cm, then put crabs in it in turn, add a proper amount of clear water, and store them in a cool place, the depth is half of the height of crabs, and they can survive for 3-5 days.

3. Keep the foam box in the refrigerator: add purified water and sea salt to the foam box, which is less than half of the crab's, and put the foam box in the freezer.