Objective: To compare the effect of cementless short and standard stems on femoral offset in total hip arthroplasty (THA). Methods: Patients undergoing unilateral THA in our hospital from January 2018 to December 2018 were retrospectively analyzed. According to the implanted femoral prosthesis, patients were divided into two groups (short stems group and standard stems group). The femoral offset, cervico-diaphyseal angle and limb length discrepancy (LLD) before and after THA were measured and compared. Results: A total of 100 patients (56 males, 44 females) were enrolled, including 50 patients in the short stems group and 50 patients in the standard stems group, with an average age of 51.14 (23-79) years. There were no statistically significant differences in the age, sex, BMI, side and causes distribution of THA between the two groups. The postoperative LLD was 2.94 ± 0.39mm and 4.54 ± 0.68mm (p=0.0460) in the short and standard stems groups, respectively. Compared to the contralateral hip joint, the difference value of postoperative femoral offset in the short and standard stems groups was 3.56 ± 0.38 mm and 5.80 ± 0.61 mm, respectively (p=0.0023). The difference value of cervico-diaphyseal angle was 6.95 ± 0.82° and 6.96 ± 0.76°, respectively (p=0.9929). Conclusion: The cementless short stems is more beneficial to reproduce normal femoral offset and normal biomechanics in THA than standard stems.