Positive for group b streptococcus refers to an infection with group b streptococcus, which is usually associated with a decrease in the body’s immunity and is most common in pregnant women. Streptococcus b belongs to the normal flora of the human body and is parasitized in the vagina and rectum of the human body. A positive infection of Streptococcus b in a healthy person does not cause illness. However, when the body’s immune system declines, infections can occur, asymptomatic generally do not need treatment; if vaginitis, intrauterine infections and other symptoms, need to comply with the doctor’s instructions for the use of antibiotics for treatment, commonly used drugs, including penicillin, erythromycin, chloramphenicol and so on. The prognosis of timely treatment is generally good. Pregnant women who are positive for group B Streptococcus may cause postpartum infections and severe systemic and focal infections in newborns, so they need to be actively consulted and treated accordingly under the guidance of a doctor.