An embodiment vehicle driver's seat structure includes a dashboard floor panel combined with a front of a center floor panel and having a shape extending in an upward inclined direction, a lower seat support installed on a top surface of the center floor panel and extending along a vehicle front-rear direction, an upper seat support installed on top of the lower seat support and underneath a driver's seat to support the driver's seat, and an upper floor horizontally connecting the upper seat support and the dashboard floor panel to each other.