Since it is called Yangcheng Lake Hairy Crab, its natural origin is Yangcheng Lake in Suzhou, Jiangsu. However, it should be clear that the hairy crabs in Yangcheng Lake are not necessarily Yangcheng Lake hairy crabs, because the authentic Yangcheng Lake hairy crabs have strict grading standards, and they cannot be regarded as authentic Yangcheng Lake hairy crabs unless they reach the lowest grade of hairy crabs stipulated by industry associations.

The quality of Yangcheng Lake hairy crabs is so high because of Yangcheng Lake. Yangcheng Lake is different from other freshwater lakes. The water quality of Yangcheng Lake is weak and alkaline, so the meat of Yangcheng Lake hairy crabs is a little sweet. In addition, the bottom of Yangcheng Lake is not silt, but sand, so there is little silt on Yangcheng Lake hairy crabs, which is very convenient to clean up.