Provided are a conductive contact holder and a conductive contact unit that enable a test to be performed in a precise temperature environment. For this objective, a construction includes a holder substrate that individually receives plural conductive contacts, and a floating member attached to the holder substrate such that a distance from a surface of the holder substrate is varied within a predetermined range by an external force. The floating member has plural hole sections into which a front end section of each of the conductive contacts received in the holder substrate is inserted. A gap between the holder substrate and the floating member forms at least a part of a passage of fluid introduced from outside of the conductive contact holder.