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目的：探讨彩色多普勒超声对先天性髂静脉受压综合征的诊断价值。方法应用彩色多普勒超声诊断28例髂静脉受压综合征的患者，均经X线静脉造影及手术证实。结果该组患者均可直接观察到左髂总静脉受压处的特征性彩色多普勒超声改变：受压段血管前后径变窄，受压远端髂静脉增宽，受压处血流增快（不完全闭塞），或血流消失（完全闭塞），有血栓形成者可见血栓形成的相应超声表现。结论彩色多普勒超声对本病有较高的诊断价值，并且有无创伤，无禁忌证及可重复检查的优点。“,”Objective To study the diagnostic value of Color Doppler Flow Imaging (CDFI) to congenital iliac vein compression syndrome. Method Twenty-eight patients with congenital iliac vein compression syndrome found by means of CDFI,confirmed by X-rays vena-angiography and operation. Results Twenty-eight cases in the group have characteristic ultrasound:In the compressed blood vessel,the lumen became smal ,the distal lumen was widened in the antero-posterior direction. The velocity of the compressed blood get faster (uncompletely blocked),or the blood flow disappeared (completely blocked). Corresponding ultrasound was found in thrombosis case. Conclusion CDFI has significant value in diagnosis of congenital iliac vein compression syndrome,and it is a noninvasive,no contraindication,repeatable examine.