The invention discloses a zero-order image elimination method of a holographic representation image, and relates to the field of a holographic technology. The zero-order image is eliminated by utilizing Contourlet transform; and the zero-order image elimination method comprises the following steps of 1, obtaining a digital holographic image needed to be processed by utilizing M lasers; 2, reading the digital holographic image and performing Contourlet transform to obtain a low-frequency coefficient and a high-frequency coefficient; 3, separating out a DC component of holographic pattern by decomposing the Contourlet in a digital holographic representation image so as to realize a noise reduction purpose; 4, performing Contourlet transform and inverse transform on the low-frequency coefficient and the high-frequency coefficient to obtain a digital holographic image without the zero-order image; and 5, performing image representation processing on a processed hologram to obtain a result. Good zero-order image elimination capability of the zero-order image elimination method of the holographic representation image can be clearly discovered from the subjective visual effect; information of object images are retained in a better manner; and the zero-order image elimination method of the holographic representation image also has better effects when being compared from the energy point of view.