The invention discloses an oat fish ball. The oat fish ball is prepared from raw materials in parts by weight as follows: 500-510 parts of silver carp meat, 10-11 parts of pomelo peels, 3-4 parts of crab cream, 20-21 parts of oat, 2-3 parts of cortex albiziae, 4-5 parts of spina date seeds, 1-2 parts of tuber fleeceflower stems, a proper amount of isomaltooligosaccharide, 10-15 parts of soybean meal, 0.1-0.2 parts of protease, 9-10 parts of table salt, 2-3 parts of lactic acid bacteria, 2-3 parts of yeast, 15-20 parts of egg white powder and 50-55 parts of starch. The oat fish ball has little fishy smell, has peculiar delicious flavor of fish meat and strong aftertaste, tastes fine, has dense cross section and is high in elasticity; added isomaltooligosaccharide improves the solubility of myofibrillar protein in a low ionic strength solution and facilitates formation of gel. Besides, the oat fish ball has high calcium content, contains multiple Chinese herbal medicine ingredients and has the efficacy of tranquilizing the mind by nourishing the heart.