Objective To evaluate the clinical effect of internal fixation with single-incision ＆ single-plate and double-incision ＆ double-plate technique internal fixation in the treatment of complex tibial plateau fractures .Methods We retrospectively reviewed 60 patients with locking plate, Schatzker types V and VI, who we operated from June 2015 to May 2017 in our hospital. Which were randomly divided into two groups, The first group (30 cases) was treated with unilateral locking plate. The other 30 cases were treated with classical double plate in group II (observation group). Results: By analysis of the recorded parameters with statistical software (SPSS 12.0), There was no significant difference in age, operation time, intraoperative bleeding, hospitalization day,fracture healing time and knee joint function between the two groups.The complication of the observation group ( 5.27%),was significantly shorter than that of the control group ( 14.55%) ,P ＜ 0. 05,Conclusion There was no significant statistical difference between two groups in the clinical effect. Based on our clinical follow-up, several key points were emphasized: (1) Soft tissue problems should be kept in mind, and usage of locking plate can reduce the complication effectively. (2) The single lateral approach technique with locking plate results in less operation time and shorter hospitalization period. (3) If the medial buttress cannot be established by reduction of the lateral fracture, then open reduction of the medial side is necessary and buttresses the medial fragment by dual plates.