Pyelocaliceal anatomy on intravenous urography is a necessary knowledge in clinical practice but until now there is no research on it in Vietnam. This study was to describe pyelocaliceal variations seen on intravenous urography. The results show that mean number of minor calices: 7.18 + or - 1.305. Typical bicaliceal pelvis: 40.5 percent, pelvis with two untypical major calices: 29 percent, tricaliceal pelvis: 30.5 percent. Graves classification of pelvic types: "Bag-pipes": 56 percent, "tree - branch": 15 percent, Y - shaped: 13 percent, "balloon": 11.5 percent, T - inverted: 4.5 percent. Pelvic position by comparison with renal sinus: intra-sinusal: 55.5 percent, almost intra-sinusal: 25.5 percent, intermediate: 16.5 percent and extra sinusal: 2.5 percent. In conclusions, pyelocaliceal anatomical research on intravenous urography was feasible and useful.