The invention relates to the technical field of poultry breeding, in particular to a method for breeding free-range ducks. The method includes steps of 1), building sheds; 2), selecting species; 3), carrying out feeding management; 4), managing the duck sheds. Feed for feeding the free-range ducks at the step 3) is mainly made of corn flour, brown rice bran, bean pulp, rapeseed meal, symphytum officinale, metaplexis japonica makino, prumus armeniaca leaves, lespedeza bicolor leaves, amorpha fruitcosa leaves, caulis sargentodoxae, rhodobryum roseum, caulis trachelospermi, bay leaves, prunus humilis bunge, trace elements, glycopeptide ketone terpene elements, microbial bacteria solution, glucoamylase, alcoholization enzymes, iodine salt and the like. Disinfection fluid used at the step 4) ismainly made of mentha spicata, caryopteris incana, radix sanguisorbae, radix ampelopsis, rhizoma dioscoreae colletii, polygonum aviculare, tamarix chinensis, rhizoma cimicifugae, fructus sophorae, Jordan almonds, alumen, n-propanol, propylene glycol and the like. The method has the advantages that the growth speeds of the free-range ducks, the weights of the free-range ducks and the survival rateand the laying rate of the free-range ducks can be increased, the feed cost and the usage of chemical can be reduced, accordingly, the free-range duck breeding benefits can be increased, and the method is healthful and environmentally friendly.