The thesis is an implementation of real-time interactive CGH. We improvedcalculation speed to realize real-time rendering, and modified IFTA to enhancequality of kinoform CGH. Furthermore, combining with input/output instruments,we construct an interactive environment. Making use of the property of Fourier Transform, we were able to manipulate CGH in frequency domain, therefore we significantly improved the speed of calculation to achieve real-time application. By modifying a long-existing IFTA, noise in CGH is also reduced. Along with SLM and far-field diffraction optical system as output and infra-red motion sensor as input, the interactive environment was established.