Flumequine, also known as fluoroquinic acid and fluorohexaquinic acid, is a synthetic second generation of quinolone animal special antibacterial drugs, and is currently the only one not shared with humans as a broad spectrum of antibacterial veterinary drugs, as a substitute for floxacin, has a strong bactericidal activity, and has a good effect on animal bacterial diseases. Its main function is to inhibit the bacterial deoxynucleic acid (DNA) cycloenzyme, so that the synthesis of deoxychemicalbook ribonucleic acid (DNA) protein is interfered with, so that the cell can no longer divide, so as to play a bactericidal role. Mainly used for livestock and poultry bacterial respiratory diseases, Escherichia coli, white dysentery, salmonellosis, typhoid, avian cholera, staphylococcal infectious rhinitis and so on. Aeromonas hydrophila has strong inhibition on colibacillosis of aquatic animals, monospora and Arccoccus diseases.