  By the approximation method introduced in \cite{FYW}, the existence and
uniqueness are proved for a class of distribution-dependent stochastic
functional differential equations (DDSFDEs). Moreover, combining the Harnack
and shift-Harnack inequalities for classical stochastic functional differential
equations with Girsanov's theorem, Harnack and shift-Harnack inequalities are
obtained for the non-linear semigroup $P_t^*$ associated to the functional
solution.
