The invention discloses a method for selecting a molecular marker for goat yeaning traits, which comprises the following steps of: taking a goat genome DNA sequence as a template, amplifying KITL gene introns 1 and 6 by using primers P1 and P2 under a PCR condition in the presence of TaqDNA polymerase, buffer environment, Mg2+ and dNTPs respectively, and judging the size of a destination fragmentaccording to an agarose gel electrophoresis result; digesting the PCR amplification product of the primer P1 by using restriction enzyme CviAII, and then detecting the enzyme digested amplification fragment by using polyacrylamide gel electrophoresis, wherein the amplification product of the primer P1 has mutation of two basic groups; detecting the PCR amplification product of the primer P2 by adopting the polyacrylamide gel electrophoresis, wherein the amplification product of the primer P2 has mutation of one basic group; and then performing gene analysis and gene frequency analysis on the amplification products of the primers P1 and P2, and performing association analysis between the amplification products and the yeaning numbers of Guanzhong dairy goats, western Saanen dairy goats andBoer goats, wherein the analysis results show that an SNPs site of the KITL gene, detected by the primers P1 and P2, can be taken as the molecular marker for goat yeaning trait selection.