1, as the case may be. If crabs stay overnight at room temperature, the temperature is relatively high and it is easy to deteriorate. Generally, you can't stay overnight for a long time, and the maximum is 1-2 hours. If the room temperature is relatively low, the storage time can be appropriately extended about 1 hour according to the situation.

2. If stored overnight in the cold storage area of the refrigerator, the temperature in the cold storage area of the refrigerator is about 4- 15 degrees Celsius, which has a certain fresh-keeping effect. The cold storage area can be kept at a constant temperature, which can generally be kept for about 12 hours, but it is best not to eat it after 12 hours.

3. If it is placed in the frozen area of the refrigerator, the temperature in the frozen area is generally very low, so crabs can be well preserved for several days overnight, but frozen crabs will make the taste of crabs worse. It is not recommended to keep crabs in the frozen area for a long time.