Recurrent postpartum fever may be caused by pathogens attacking the reproductive tract after delivery and causing local or systemic infection, or it may be caused by the urinary system, respiratory system, mastitis and so on. Before the etiology is clear, broad-spectrum antibiotics can be used according to clinical experience and clinical manifestations, and sensitive antibiotics can be chosen after the etiology is clear. If it is placental residue, remove the residue in the uterine cavity while effectively anti-infection. If the uterus is seriously infected with inflammation and the inflammation continues to spread into uncontrollable sepsis and DlC, total hysterectomy may be needed in time.