Cooked swimming crabs can still be eaten after being put in the refrigerator. The freshness and shelf life of Portunus trituberculatus can be prolonged by proper storage in low temperature environment and keeping the internal temperature of refrigerator below 4 degrees Celsius. Make sure that the swimming crab is completely cooked before putting it in the refrigerator, and cool it in time to prevent bacterial growth. Try to avoid contact with food during storage to prevent odor from spreading. Storage time should be limited, and it should be eaten within 2-3 days.