Feed used for improving immune functions of grass carp

The present invention provides a method for improving a carp feed immune function, which comprises a vegetable oil, soybean meal, fish meal, salt, wheat flour, immune medicine formulation, Bacillus subtilis, mineral additive elements, vitamin supplements and calcium dihydrogen phosphate. The use of feed containing formulation immune medicine with high efficiency, low toxicity, high safety, less residue and many other advantages, and the wide variety of sources, low cost, fish immune system adjusts to improve the anti-stress action and aquaculture immune function, thus prevention and treatment of fish diseases.