Hairy crabs are not recommended to be eaten overnight after steaming if the room temperature is relatively high and the crabs have not been stored in the refrigerator. If the steamed hairy crabs are properly stored in the refrigerator, and there is no odor or other deterioration, the steamed hairy crabs can be eaten overnight, but it is recommended to consume them as soon as possible and eat them as soon as possible. Hairy crabs contain a lot of nutrients, such as protein, vitamin A, calcium, vitamin B2 and other ingredients, which can supplement some nutrients for the body after intake. Hairy crabs need to be eaten promptly after steaming to avoid the proliferation of bacteria after prolonged storage. If the indoor temperature is relatively high after steaming and the hairy crabs are not stored in the refrigerator in time, it is not recommended to eat them overnight even if they have been steamed, because hairy crabs stored at room temperature can easily increase the reproduction of bacteria. If the steamed hairy crabs are put into the refrigerator for storage, and there is no deterioration phenomenon such as change of taste when they are consumed again, then you can eat overnight hairy crabs, but you must heat them thoroughly before consumption.