双胎输血综合征(TTTS)是单绒毛膜双羊膜囊(MCDA)双胎妊娠的严重并发症,围生儿患病率及死亡率高。为改善其妊娠结局,近年来应用胎儿镜介导下胎盘交通血管激光凝固术(FLC)、羊水减量术等来治疗TTTS。FLC是TTTS最有效的治疗方法,虽FLC治疗后存活者神经发育结果远远好于羊水减量术,但存活者近期、远期神经功能损害仍然无法避免。因此,对于MCDA双胎妊娠,在孕期应加强超声监测,及早诊断TTTS,及早进行必要的干预。 Twin sibling transfusion syndrome (TTTS) is a serious complication of twin pregnancy with single chorionic amniocapsule (MCDA), with high rates of perinatal morbidity and mortality. In order to improve its pregnancy outcome, in recent years, fetal lens-mediated vascular laser photocoagulation (FLC), amniotic fluid reduction surgery and so on to treat TTTS. FLC is the most effective treatment for TTTS. Although the neurological outcome of survivors after FLC is far better than that of amniotic fluid, the long-term neurological impairment is still unavoidable in survivors. Therefore, for MCDA twin pregnancies, ultrasound monitoring should be strengthened during pregnancy, early diagnosis of TTTS, the necessary intervention as soon as possible.