[en] Objective: To find the optimal beam arrangement for clinical cervical cancer treatment with intensity modulated radiation therapy (IMRT) technique through comparison between different beam arrangements. Methods: Six IMRT plans were designed for 10 patients with cervical cancer. The prescribed dose was 46 Gy, while the fractionated dose was 2 Gy, and 5, 7 9 equispaced beams were applied. The initial beam angle degrees were 0 and 180. The terms of target coverage, target dose uniformity, and target conformability were calculated and compared. Results: The target conformabilities between 7 and 9-beam plans were identical, and dose uniformity between the two angles beams was the best in 7-beam plan. The target coverage was satisfactory in 5-beam plan, but the dose uniformity and target conformability in it were inferior to those in 7 and 9-beam. The dose on normal tissues in 9-beam plan was not less than that in 5-beam plans, but the treatment was prolonged due to the increased segments and monitor units (MU). Conclusions: Considering the physical and biological factors during the cervical cancer treatment with IMRT, 7-beam plan would be the best choice for the beam design. (authors)