  We investigate the accretion flow around a giant planet using two-dimensional
hydrodynamical simulations by studying the local region of accretion disk
around the planet. The results show that, when the initial orbit of the planet
embedded in protoplanetary disk is eccentric, the accretion disk formed around
the planet is retrograde during the evolution and may be a possible origin of
the retrograde ring around eccentric extrasolar giant planet.
