  The explanation of the anomalous behavior in $\kappa$-type (BEDT-TTF)$_2$X
which was revealed by the nuclear magnetic resonance experiments is presented.
We calculate the electronic properties by using the one-loop approximation for
the superconducting fluctuation. The decrease of the density of states due to
the large damping effect is obtained and the one-particle spectrum has a
pseudogap structure around the Fermi level. It is found that these behaviors
are peculiar to the quasi two-dimensional system and are enhanced in the
incoherent metal. The similarity between the cuprates and this compounds is
discussed and an experiment to check this proposal is suggested.

Superconductivity;Strongly Correlated Electrons