Eco-farming is to use pollution-free waters such as lakes, reservoirs, rivers and natural bait, or to use eco-technical measures to improve the water quality and ecological environment of aquaculture, to proliferate and breed according to a specific farming model, and to put in pollution-free feed without fertilization or spraying drugs, with the goal of producing pollution-free green food and organic food. Ecological livestock and poultry products are welcomed by consumers because of their high quality and good taste, and the products are in short supply.