  The late-time tail behavior of massive scalar fields is studied analytically
in a stationary axisymmetric EMDA black hole geometry. It is shown that the
asymptotic behavior of massive perturbations is dominated by the oscillatory
inverse power-law decaying tail $ t^{-(l+3/2)}\sin(\mu t)$ at the intermediate
late times, and by the asymptotic tail $ t^{-5/6}\sin(\mu t)$ at asymptotically
late times. Our result seems to suggest that the intermediate tails $
t^{-(l+3/2)}\sin(\mu t)$ and the asymptotically tails $t^{-5/6} \sin(\mu t)$
may be quite general features for evolution of massive scalar fields in any
four dimensional asymptotically flat rotating black hole backgrounds.
