The upper 8 centimeters of the great saphenous vein were studied on 102 sides (84male, 18 female) of adult Chinese cadavers. The chief results were as follows: 1. The surface projection of the sapheno-femoral junction is variable. It lies at avariable distance below the point which is situated opposite the junction of the lateraltwo thirds and medial third of the line joining the anterior superior iliac spine to thepubic tubercle. The mean value of the distance between this point and the sapheno-femoral junction is 3.84?0.07 cm (min. 2.1 cm, max. 5.5 cm). 2. Duplication of the great saphenous vein is rare. It is found on 6 sides only(5.88?2.33%) in our material. 3. There is a close relation between the terminal part of the great saphenous veinand the superficial external pudendal artery. In 65.63?4.85% of the cases, this arterypasses behind the terminal part of the vein. 4. The upper part of the great saphenous vein is joined by lateral, medial, or bothaccessory saphenous veins in 86 sides (84.31?3.60%), among which the lateral accessorysaphenous vein occurs most frequently (61.61?5.24%). 5. The junction between the deep external pudendal vein and the great saphenousvein lies within the fossa ovalies in 25 sides (24.51?4.26%). 6. The patterns of the tributaries of the great saphenous vein may be classifiedinto 4 types and 11 subtypes, according to the number of veins and the manner of theircombination. Type II_2, in which two tributaries are combined, occurs more often thanany other types (38.23?4.81%). In the point of view of practical application, the pat-terns of the tributaries may be classified into different types, according to the numberof the direct opening on the upper part of the great saphenous vein, among which the3 tributary and 4 tributary types are the highest in percentage, being 34.31?4.70% and33.33?4.67% respectively. 7. The position of the tributaries which open into the upper part of the greatsaphenous vein is variable. In the majority of sides (91.18?2.80%), the position lieswithin the uppermost 4 centimeters of the great saphenous vein (min. 0.3 cm, max.7.2 cm). The surgical significance is briefly discussed.