Neutron holography is an imaging technique permitting the three-dimensional reconstruction of the micro-structure of the original sample.This paper simply introduces the principles and developments of neutron holography.Based on the principle

the holographs and reconstruction procedure of an octahedral crystal lattice with H atom in the center are simulated by numerical method.Effects of some critical parameters such as statistical noise

wavelength of source neutrons

the angular step width and the detector acceptance angle are also investigated in this paper.The simulation method and results will be helpful for future work.