The invention relates to the biotechnical field, in particular to primers and a method for rapidly identifying group B
streptococcus and detecting
drug resistance thereof and primer application. Four pairs of
specific primers are as follows: a cfb
gene primer pair cfb-F and cfb-R for identifying the group B
streptococcus; an ermB
gene primer pair ermB-F and ermB-R for detecting the
drug resistance of the group B
streptococcus to macrocyclic lactones; an mefA / E
gene primer pair mefA / E-F and mefA / E-R for detecting the
drug resistance of the group B streptococcus to macrocyclic lactones; an linB gene primer pair linB-F and linB-R for detecting the
drug resistance of the group B streptococcus to lincosamides. The method comprises the following steps: Step 1,
DNA extraction; Step 2, primer design; Step 3, gene amplification; Step 4, result interpretation. According to the invention, the primers can identify GBS (group B streptococcus) in a
genital tract of a pregnant woman and detect the drug resistanceof the GBS to
erythromycin and
clindamycin at the same time so as to guide clinical medication.