Objective　 To explore the scanning skill of prenatal ultrasound in improving diagnostic rate of fetal limb deformities.　Methods　The continuous order tracking method was adopted,14,217 women with pregnancy ranging from 16 to 37 weeks were examined by ultrasound scan of fetal limbs in our hospital from January 2014 to January 2015.　Results　In 14,217 cases of pregnant women, 41 cases were found with limb malformations, the detection rate being 0.28%, including 1 severe body defect, 4 body defect, 6 radial deficiency, 9 talipes equinovarus, 2 hand posture malformation, 2 fibula deficiency, 2 congenital multiple joints contracture, 3 sireniform fetus； 16 cases were misdiagnosed, accounting for about 28% of all abnormalities，including 7 syndactylism, 5 polydactylism, 4  overlapping hands, 2 talipes equinovarus. All were confirmed by induced labor or after birth.　Conclusions　Prenatal ultrasound could display fetal limb structure,and should be chosen as the first preferred diagnostic method forfetal limb deformities. Adeptness and high expertise in operation arethe key to the prenatal ultrasound examination.