Aim: A retrospective study was conducted to compare the lateral approach and posterolateral approach in total hip arthroplasty in term of the Harris hip score, duration of surgery, length of incision and blood loss. Methods: The study were done totally on 46 patients aged between 42 to 80 years. 23 patients were operated through the direct lateral hardinge approach while the other 23 patients were operated through the posterolateral approach. Those patients were operated in between years of 2012 to 2017 in the first Jiamusi university hospital. The data were collected from the medical records of the patients and direct contact with them. The collected data were analyzed with Spss 21.0 version software. The Chi-square test was used to make the comparison between the two groups. Results: There was no significant difference in age, gender, duration of surgery, blood loss and size of incision. The p-value was greater than the ? = 0.05. However, there was significantly difference in Harris hip score between both groups and the p value was 0,043which is statistically significantly difference between the two groups. Conclusion: In our study, patients treated with direct lateral approach had a better postoperative outcome with less complication than the patients treated with a standard posterolateral approach.