Background: the sacroiliac joint (SIJ) is the largest axial joint in the body, with an average surface area of 17.5 cm², it is an accepted source of low back and/or buttock pain with or without lower extremity pain. Based upon history and physical examination findings, the prevalence of sacroiliac joint pain in chronic low back pain population has been shown to range from 22.5% to 62.8%. Aim of this work: to evaluate the therapeutic benefit of intra articular corticoid injections into the sacroiliac joints in a standardized fashion. Patients and Methods: This study included 20 adults with SIJ pain due to different reasons and who were scheduled to undergo SIJ injection of corticosteroids and local anesthetic. Demographic data to consider include sex, age, weight, occupation, affected side, co morbidity and suggested pathology of the examined SIJ. Results: there is a significant decrease of the inflammatory back pain in 85% of patients; on mean post 2.00±1.86 compared to pre 7.50±1.24 according to VAS of patients after 6 months follow up (p-value <0.001 HS). Its minimally invasive procedure & good result by single injection to all patients during 6 months follow up. Conclusion: CT guided sacroiliac joint minimally invasive, short time, very accurate and good results obtained. Intra articular SIJ injection is an effective method for alleviating pain in patients suffers from SIJ pain at least in short term.