Dead Yangcheng Lake hairy crabs (including all the lake crabs) no matter how much time can not eat, because hairy crabs live and grow in the dirty river pond, inside and outside the body stained with a large number of germs. Live crabs can be metabolized through the body of the bacteria out of the body; but once the death of bacteria in the body will be a large number of reproduction, high protein quickly deteriorated into toxic and harmful substances, eaten to the detriment of health. If people eat such hairy crabs will cause food poisoning, common manifestations of nausea, vomiting, abdominal pain, diarrhea, so the dead hairy crabs we can not eat, even if it is expensive. It is not as important as our body, to protect their health.