Objective To investigate the clinical effect of high viscosity bone cement for treatment of osteoporotic vertebral compression fractures. Methods From Jan. 2012 to Jan. 2016, 80 patients with osteoporosis vertebral fractures were enrolled into this study. They were randomly divided into control group and observation group, with 40 cases in each group. They were all adopted PKP methods for treating, while the observation group got the high viscosity bone cement and the control group got the low one. Clinical outcomes were assessed in terms of back pain visual analogue scale (VAS), Oswestry disability index (ODI) after surgery.The outcomes of back pain VAS score, ODI, venous leakage rate, discoidal leak rate, rate of around vertebral body, rate of contiguous vertebral fracture were compared between two groups. Results All patients were successfully completed surgery. We took postoperative follow-up more than one year, there were severe complications occurred. VAS score, ODI score were significantly higher than that of before operation. Two groups had both bone cement leakage and other complications. Low viscosity bone cement group of bone cement leakage rate was 66.7%, significantly higher than the 33.3% of the high viscosity of bone cement group, P<0.05, but no obvious neurologic injury. Conclusion The high-viscosity bone cement for osteoporotic vertebral fractures provides better clinical outcomes. It may reduce bone cement leak rate and complications.