The present application discloses a novel anti-human IL-17 monoclonal antibody obtained by phage antibody library screening and genetic engineering, or a functional fragment thereof, a polynucleotide encoding the monoclonal antibody or the functional fragment thereof, a vector comprising the polynucleotide, a host cell comprising the polynucleotide or vector, a method for preparing and purifying the antibody, and use of the antibody or the functional fragment thereof
