The extracellular enzymes produced by Bacillus amyloliquefaciens mainly include phytase, chitinase, glucanase, protease, amylase, rennet, etc. The main lipopeptide metabolites are surfcatian, Antagonistic active substances such as fengycin, litarin and Bacillo-my-cinD, also produce the plant growth hormone indole-3-acetic acid (IAA).