Carrier generation and transport properties in discotic liquid crystal have been studied by means of a time-of-flight method. The anisotropy of the carrier mobility and dark conductivity has also been estimated using two types of electrode configurations, that is, a sandwich and inter-digited electrodes. The carrier mobility in the direction perpendicular to the columnar structure in the discotic phase has been estimated to be a less than that parallel to the columnar axis. The corresponding anisotropy in the dark conductivity is also confirmed in the discotic phase.