Purpose The aim of the study was to investigate in the severe preeclampsia the carotid artery elasticity using pulse wave velocity. Methods The study involved Sixty-four patients with severe preeclampsia as case group, and Thirty-one age- and gestational weeks- matched normal controls. The subjects were completed the clinical datas and carotid ultrasound scans in prenatal and 12 weeks after delivery, Intima-media thickness(IMT)、End-systolic diameter(Ds)、End-diastolic diameter(Dd) were measured by Quality intima-media thickness(QIMT) and M-mode ultrasound, and then calculated One-point pulse wave velocity (PWVβ) and analyzed them. Results Compared with the control group in prenatal , the parameters of SPE group in prenatal such as Weight、BMI(Body Mass Index)、PWVβ were increased(p<0.05); Compared with the control group after delivery , the parameters of SPE group after delivery such as Weight、BMI、PWVβ were increased(p<0.05); Compared with SPE group before delivery, the parameters of SPE group after delivery such as Weight、BMI、 PWVβ were decreased (p<0.05); Compared with control group before delivery, the parameters of control group after delivery such as weight、BMI、HR were decreased(p<0.05). Conclusion Carotid arterial stiffening could be seen in severe preeclampsia,which could be recovered incompletely on average 21.79 weeks after delivery.