Narrow pelvis continues to be one of the most frequent causes production caesarean section.Express the degree of anatomical narrowing of the pelvis rare and, as an absolute indication for caesarean section, not pose difficulties for the choice of mode of delivery. The issue of implementation caesarean section in III and IV degree of narrowing of the pelvis is usually solved in advance, and operation is performed routinely at the end of pregnancy. Much harder decide on the mode of delivery when I and II degree of narrowing. Where combination with other adverse factors (a large fruit, pelvic fetal presentation, prolonged pregnancy, primipara age and older etc.) the method of choice becomes a caesarean section. But often need end of Caesarean delivery occurs only during delivery, clinical mismatch is detected when the size of fetal head and pelvis mother. Delaying the operation in this case dangerous severe complications: uterine rupture, fetal death, the threat of urinary fistula formation. So wayin the conduct of births to mothers with a narrow pelvis is vital Identification of functional, clinically narrow pelvis,but if any -- immediate cesarean delivery. On the other hand,emergence in childbirth clinically narrow pelvis requires further explanation,that number of cases reveals fetal hydrocephalus and to avoid unnecessary Caesarean section, using plodorazrushayuschuyu operation.