The water systems of the many Tanquan and Yugong River basins at the foot of the east and west mountains of Heqing Bazi are constantly flowing and flowing, forming a wide natural grass sea wetland in the waters. Heqing County has invested a lot of funds, and the whole body implements the Caohai Wetland to return the grass to the Ze and the grass, the pond to the sea and the lake, and carry out special management to ban feed aquaculture, artificially create the grass, and surround the sea, etc., to promote the Caohai Wetland to become beautiful scenery, The most beautiful grass sea wetland in harmony between humans and birds. Heqing Caohai Wetland belongs to the natural lake wetland of the karst plateau, with a total area of about 400 hectares. Of which, the East Caohai area is 300 hectares, the average water depth is 1.7 meters, the deepest 2.4 meters, the annual water storage capacity is 1.84 million cubic meters, and the annual storage volume is 3.6 million cubic meters; The area of the West Caohai is 101 hectares, consisting of three wetland sections in the north, central and southern regions, with an average water depth of 1.5 meters, an annual water storage of 1 million cubic meters, and an annual storage of 3 million cubic meters. The main plant community types in Cabbage Sea Wetland are sea cauliflower, wild scorpion, lotus, black algae, etc., of which lotus and wild scorpion are national II-level protection plants, sea cauliflower is national III-level protection plants.