It is well known that Ni-Zr amorphous alloys are highly resistant to pulverization due to the repetition of the hydrogen absorption and desorption unlike Ni-Zr crystalline compounds. Since such excellent property may be related to their structure and chemical bonds, it is very important to investigate the structural change of metal atoms due to the hydrogen (deuterium) absorption. We therefore propose to study the structures of amorphous Ni33Zr67 and Ni33Zr67Dx (x=0.1, 0.5, 1.0 and 1.5) by using the GEM spectrometer. We will perform the revere Monte Carlo simulation and Voronoi polyhedral analysis based on the neutron (and X-ray) data in order to compare the local structures around Ni and Zr atoms for amorphous Ni33Zr67 and Ni33Zr67Dx and elucidate differences between them.