1. Preparation raw materials: duck blood is an animal's blood, which is usually made from the blood of ducks, while hairy blood wanton is a kind of dish, whose raw materials usually include duck blood, bean sprouts, vermicelli, luncheon meat, tripe and so on.
2. Production process: duck blood is usually obtained by simply heating and coagulating, while Mao Blood Want needs to be made by cooking and flavoring and other production processes.
3. Edible: Duck blood can usually be eaten on its own or used to make other dishes, while Mao Blood Want is a dish that is usually eaten directly.
In summary, there is a clear difference between duck blood and hairy blood wanton in terms of raw materials, production process and mode of consumption.