Abstract: The major method to improve the wide-field optical coherence tomography (WFOCT) is to meliorate the light source and beam path of optical systems. The effect of the imaging state and environment of a wide-field optical coherence tomograph on its transverse resolution was investigated. The interference effects of the system were simulated by the aid of ZEMAX software. The 2-D image information of the sample was analyzed with the eight-step phase-shifting technique in the experiment. The simulation results show that the interference fringe with better contrast and high parallelism can be acquired by simulation, and verify the feasibility of simulating the interference system by ZEMAX software.