  We investigate the separability of Klein-Gordon equation on near horizon of
d-dimensional rotating Myers-Perry black hole in two limits : 1) generic
extremal case and 2) extremal vanishing horizon case. In the first case , there
is a relation between the mass and rotation parameters so that black hole
temperature vanishes. In the latter case, one of the rotation parameters is
restricted to zero on top of the extremality condition. We show that the
Klein-Gordon equation is separable in both cases. Also, we solved the radial
part of that equation and discuss its behaviour in small and large r regions.
