2, steamed crab, put in the refrigerator chilled, can be stored for about a day, in the refrigerator frozen, properly stored up to a month long. After the crab steamed, it is best to eat as soon as possible, should not be left too long, so as not to breed bacteria. If crabs kept in the refrigerator develop a bad odor, they should not be eaten. After refrigerated or frozen crabs, need to be thoroughly heated before eating.