Background： The main purpose of perioperative fluid therapy is to maintain the effective circulating blood volume. Combined epidural and spinal anesthesia (CSEA) with a small dosage, rapid onset, perfect block and convenient postoperative analgesia is now widely used in cesarean section. However, because of the physiological changes during pregnancy, maternal hypotension is one of the most common complication of cesarean section. Severe hypotension may result in adverse effect of maternal and fetal, therefore, prevention of hypotension in cesarean section anesthesia is particularly important. Many methods have been used to control blood pressure in current clinical practice, mainly through the use of vasopressor and fluid therapy, but the controversy of perioperative fluid therapy for cesarean section is still exist. Objective：The main purpose of perioperative fluid therapy is to maintain the effective circulating blood volume. In this paper, the current controversy surrounding cesarean fluid therapy was analyzed to provide the evidence for clinical application. Content：This article mainly reviewed the time, capacity requirements or infusion speed and liquid type of fluid therapy for cesarean section. Trend：Crystalloid preload has the least effect on prevention of hypotension, colloid or crystalloid is still controversial when coload. Combination with vasopressors and fluid therapy can minimize the incidence of hypotension caused by intravertebral anesthesia.