According to the website of 39 doctors, it can be frozen for about 1 month in general, but it is recommended to eat it within the shelf life as much as possible. If the storage time is too long, it may lead to the loss of nutrients in crabs, and the taste will become worse. It may also lead to the deterioration of crabs, which may easily cause abdominal pain, diarrhea and other discomfort after eating.

Crab is a generic term for Decapoda. Rich in bacteria and parasites. The body is wide and flat, and a few are narrow and long; The head and chest are covered with well-developed head breastplate, and the shape of head breastplate varies from species to species. The forehead is shortened, and the compound eye is outside the second antenna; The mouthparts include jaws with hard teeth; The abdomen degenerates flat and twists and turns on the ventral surface of the head and breastplate. Male abdomen is slightly triangular or long and narrow, while female abdomen is wider, mostly rectangular or round; There are five pairs of pectoral feet on both sides of the ventral surface of the head breastplate, and 1 pair is pincer-shaped.