  We theoretically investigate the electric transport in the pseudogap state of
High-Tc cuprates. Starting from the repulsive Hubbard model, we perform the
microscopic calculation to describe the pseudogap phenomena which are induced
by the superconducting fluctuations. The single particle Green function, spin
susceptibility and superconducting fluctuations are self-consistently
determined by the SC-FLEX+T-matrix approximation. The longitudinal and
transverse conductivities are calculated by using the Eliashberg and
Kohno-Yamada formalism. The effects of the spin fluctuations and
superconducting fluctuations are estimated, respectively. The vertex
corrections arising from the two fluctuations are also calculated. The
additional contribution from the Aslamazov-Larkin term is also estimated beyond
the Eliashberg formalism.
  It is shown that the main effect of the superconducting fluctuations is the
feedback effect through the spin fluctuations. The correct results are obtained
by considering the superconducting fluctuations and the spin fluctuations
simultaneously. The temperature and doping dependences of the resistivity and
the Hall coefficient are well explained. We point out that the characteristic
momentum dependence of the systems plays an essential role in this explanation.
