Traditional Chinese medicine composition for preventing tilapia streptococcus agalactiae

The invention belongs to the technical field of aquaculture preparations, and discloses a traditional Chinese medicine composition for preventing tilapia streptococcus agalactiae, being prepared from the following components in percentage by mass: 10-15 percent of coptis chinensis, 7-15 percent of honeysuckle, 7-15 percent of isatis root, 10-20 percent of Houttuynia cordata, 20-40 percent of black soya bean and 0-20 percent of radices trichosanthis. The traditional Chinese medicine composition is taken as an additive and is added into tilapia feed, has a highest immune protective rate of 94.21 percent for tilapia, and has practical and wide application values; the survival rate of the tilapia is 96.67 percent.