Procedure and result: From approximately June, August 2005, we discovered two cases of leg ulcer due to the simple deficiency of the vena perforans valve: both are male; one 67-year-old and the other 25 years old; they presented with a lesion of leg ulcer for a long time (more than 10 and 2 years alternately); the ulcer spots were located on the sus-malleolus medialis (5 cm and 6 cm alternately from the malleollus).