The Chinese tiger-headed crab has a strange shape, and its head and breastplate are round, indicating that there are granular protrusions, especially in the front and middle. There is a dark purple spot in the gill area, like a tiger's eye. Widely distributed in the southeast coast of China, the Yangtze River estuary, Shandong Peninsula, Bohai Bay, Liaodong Peninsula and other sea areas. It is also distributed in the Korean Peninsula and the Philippines. It is a large-scale economic crab with warm water near the sea and lives at the bottom of shallow sea sediments.