Objective To compared the image quality and application value of different doses of CT scanning technique in hip contrast fistulography. Methods 110 cases of patients who were suspected of having foreign bodies and underwent hip contrast fistulography in the department of traumatology of our hospital between March 2013 and March 2015 were selected as the study objects and were randomly divided into the routine group (scanning dose was 200 mA, 30 cases) and the low dose group A (scanning dose was 100 mA, 38 cases) and low dose group B (scanning dose was 50 mA, 42 cases). ED, CTDIvol and DLP were compared between the three groups. The image quality was evaluated. Results There were no significant differences in DLP between any two groups of the three groups (P﹥0.05). ED and CTDIvol in the low dose group A [(7.4±0.7) mSv, (8.6±0.8) mGy] and low dose group B [(4.2±0.4) mSv, (4.3±0.5) mGy] were lower than those in the routine group [(16.2±1.1) mSv, (18.9±0.6)mGy] (P<0.05). The excellent and good rates of image quality in the routine group (100%) and the low dose group A (92.1%) were close to that in the routine group. The excellent and good rate of image quality in the low dose group B was 83.3%. Compared with that in the routine group, there was significant difference (P<0.05). Conclusions The requirement of image quality in diagnosis of buttock sinus is not high. Compared with routine dose, tube current of 50 mA can reduce the radiation damage and also meets diagnostic needs.