Method 1: Refrigerator preservation of crabs Crabs are fresh aquatic products, away from the water after the preservation of a shorter period of time, the number of purchased can be eaten in 3 days or so time to finish the preservation of crabs is relatively simple: choose vigorous crabs, the crab's feet and the big locks bundled up to reduce the physical exertion of the crabs, and then placed in the refrigerator freezer, covered with a wet towel can be preserved. When you eat every day, pick the less vigorous ones first, and the vigorous ones can continue to be preserved.　The way to differentiate is to touch the crab's eyes lightly with your hand, if it is not responsive, it means it is not vigorous enough.　Method 2: Preserving crabs in plastic buckets/pots Prepare a 30-50 cm high plastic bucket/pot with a smooth inner wall that is not easy to escape. Put the crabs into it, not stacked; then add water to half the height of the crab's body - mainly moisturizing, can not bury all the crabs, if the water is too deep the crabs will be suffocated by lack of oxygen and die. Buckets/pots do not need to be covered, using this method of preserving crabs, hairy crabs can be preserved for more than 5 days when the temperature is not too high.　Method 3: temporary pool to save crabs If the amount of purchased crabs more than three or five days to eat, can not use the above method of storage, the best way is to do their own bathtub as a temporary pool, the first to let out to the crabs to enjoy a little bit: because the bathtub four walls are smooth, the crabs can not escape, and then gently poured into the bathtub crabs, fill the water to the crabs are just buried, if the crabs put the eight-footed stand up to the surface of the water can breathe, and According to the storage time and the number of cast flavor a small amount of small fish and shrimp, with this method of storage of crabs can generally be more than 7 days or longer, good quality crab storage survival rate of up to 95% or more.　Special reminder: Please do not wash the crabs in water if they are not eaten immediately, otherwise they will die. There is no need to put them in the refrigerator if the room temperature does not exceed 15℃. Under normal circumstances can be saved 5-7 days, but save time is too long crabs will be thinner, 3 days to eat does not affect the taste.