Emergency cesarean section is sometimes required for acute fetal distress but also for some maternal vital emergencies. In spite of its maternal (Mendelson's syndrome, difficult intubation) and fetal (neonatal depression) risks, general anaesthesia was classically used. The arguments in favor of regional anaesthesia techniques for emergency cesarean section and the respective advantages of spinal and epidural anaesthesia are developed in this text. The already functioning epidural catheter can be used to rapidly convert analgesia for labor to anaesthesia for cesarean section: this situation is probably the simplest to manage but requires that parturients at risk for cesarean section were recognized in early labor, especially all the parturients with a suspected difficult airway. In case of patchy or unilateral analgesia, it is particularly important to resite the catheter to avoid the need for emergency general anaesthesia to solve an inadequate epidural anaesthesia for cesarean section. Spinal anaesthesia is the technique of choice for its rapidity of action but its hemodynamic risks need a prior careful evaluation of maternal hemodynamics. General anaesthesia will be always indispensable in some cases; therefore, every anaesthetist should maintain sufficient experience and skills in the management of some of its complications, especially intubation difficulties.