Caofeidian wetland crab stands out, winning the unanimous praise of the contestants for its delicate meat quality, rich taste and unique origin, and winning the title of "delicious crab king". At the same time, Caofeidian also won the honor of "golden origin of delicious crabs" in this tasting contest.

Caofeidian Wetland has many records about the history of crabs. According to Luanxian annals (fifty volumes of products), "Crabs, commonly known as crabs, are found in four or five districts of the county. The male is big and sharp, and the female is small and round. The reservoirs in Zone 4 produce about 1 10,000 crabs every year, and the rivers in Zone 5 produce about130,000 crabs every year. Both salt water and fresh water are produced, and those in the river are round, hairy, with wide head and breastplate, flat abdomen and five pairs of horizontal feet. The first pair is deformed into pliers and runs very fast. " The fourth and fifth districts in this paper belong to the territory of Caofeidian today, which are roughly in the coastal basins of Shuanglong River and qinglong river.

Caofeidian area No.4 Farm, Caofeidian No.7 Farm and caofeidian area No.11 Farm.

Request from the People's Government of caofeidian area, Tangshan City on Delineating the Protection Scope of Geographical Indication Products of Eriocheir sinensis in Caofeidian Wetland, Tang Cao Cheng Zheng [2016] No.74.

Tangshan local standard DB1302/T182-2014 "Technical Specification for Crab Production in Caofeidian Wetland"