The angiographic findings of 18 patients with vena cava syndrome were reported.The venacavographies showed the extent,degree of stenosis or obstruction,and collateral vascular dilatation.The vena cava displaced and stenosis suggested that there was space occupying lesion in the adjacency.The abdominal aortography could show streak like vessels supplying the tumor in the periphery of vena cava.The casuse,clinical feature and angiographic classification were briefly discussed.The angiography is considered an accurate method of diagnosing vena cava syndrome.