1. Tie the feet of the blue crab with a rope and put them directly in the refrigerator. Pay attention to the temperature not lower than 5 degrees Celsius and not higher than 10 degrees Celsius. Cover it with a wet towel and save it. When eating, eat the low energy first, that is, gently touch its eyes with your hand, and eat the low reaction first.

2. You can put the live blue crabs in a plastic bucket and pour in half of the water. Be careful not to drown all the blue crabs, because it will lead to hypoxia and can be stored for about five days at room temperature.

3. If you have a bathtub at home, you can pour the blue crabs in. You don't have to worry about crawling away, and then pour in the right amount of water. Don't forget to give them some small fish and shrimp. This method can be kept for one week.

4, blue crabs can also be frozen and preserved, which can preserve the fresh air of crabs. At the same time, it is best not to keep it for too long or to eat it as soon as possible.