The invention provides a feed additive for artificial breeding of sigauns fuscesens. The feed additive is prepared from, by weight, 12 parts of herba houttuyniae, 4 parts of allium tuberosum rattler, 7 parts of sargassum, 2 parts of rhizoma bletillae, 3 parts of castanea mollissima Bl., 3 parts of arillus longan, 1.2 parts of semen citri reticulatae, 4 parts of radix stemonae, 15 parts of peach juice, 20 parts of watermelon juice, 6 parts of finless eel blood, 7 parts of tea-seed oil, 7 parts of myrrh, 12 parts of gynura japonica, 3 parts of radix astragali, 4 parts of fructus lycii, 6 parts of herba glechomae, 8 parts of fructus psoraleae, 14 parts of seeds of fruit of Chinese waxgourd, 8 parts of litchi exocarp, 3 parts of semen coicis, 12 parts of cushaw leaves, 5 parts of sweet potatoes, 5 parts of ternip, 24 parts of wheat bran and 6 parts of bagasse. The feed additive is reasonable in ingredient compatibility, raw materials are easy to obtain, a preparation method is simple, by means of the feed additive, palatability of mixed feed can be improved, the eating preference of sigauns fuscesens can be met, the function of inducing sigauns fuscesens to eat is achieved, nutrition ingredients are matched for sigauns fuscesens, resistance of sigauns fuscesens can be further improved, and stress resistance of sigauns fuscesens in a diving environment is improved.