Grouper (scientific name: snakehead) is also called snakehead, tuanyu, Hei Bang, raw fish, snakehead, hybrid fish, cuttlefish and Cai Yu. Common edible fish in China are large in size, fast in growth and high in economic value. Snakehead has less bone spurs, high meat content and rich nutrition, which is higher than protein contained in chicken and beef. As a medicine, snakehead has the functions of removing blood stasis, promoting tissue regeneration, nourishing and recuperating. The postoperative snakehead has the functions of promoting granulation, enriching blood and promoting wound healing, and its nutritional value is very rich.