The present invention discloses an antibacterial peptide immunomodulatory feed additive for pigs. The feed additive consists of the following components in parts by weight 1-5 parts of bacillus amyloliquefaciens SC06 at a concentration of 10^9 cfug, 1 part of pidotimod, 3 parts of zeolite powder, and 1-5 parts of corn starch. The antibacterial peptide immunomodulatory feed additive for pigs can overcome many problems including pig body immunosuppression, low disease resistance, slow growth, etc. in the current breeding process, and the antibacterial peptide immunomodulatory feed additive for pigs has characteristics of being easy in preparation, easy to use, significant in effects, etc., and thus is very good in promotion and use values.