Fresh water preservation: first put the live crabs into the storage basin, and then add clean water. The water should not be too deep and should not exceed the crab back. Refrigerator preservation: bind crabs, which can save physical strength. Spread a wet towel on the bottom of the plastic box, then put the crab flat in the plastic box, put it in the freezer and cover it with the wet towel. Fish and shrimp preservation: This method is based on fresh water preservation, adding a small amount of fish and shrimp to clear water to enhance the fluidity of water and preserve the vitality of crabs.

1, fresh water preservation: first put the live crabs into the storage basin, and then add clean water. The water should not be too deep and exceed the crab's back, so as to ensure that the crab can just stand up.

2. Keep the refrigerator fresh: tie up the crabs, so as to save your strength. Spread a wet towel on the bottom of the plastic box, then put the crab flat in the plastic box, put it in the freezer and cover it with the wet towel.

3. Fish and shrimp preservation: This method is to add a small amount of fish and shrimp to fresh water on the basis of fresh water preservation to enhance the fluidity of water and preserve the vitality of crabs. In this way, crabs can be preserved for more than a week and the survival rate is high.