Objective To study the relationship between intermodulation components of steady state visual evoked potential (SSVEP) and spatial distribution of visual perception, laying a foundation for follow-up research of cognition related to intermodulation components.Methods This article adopted two flashing frequencies to tag two stimuli respectively, designed and implemented three experiments with different patterns of spatial distributions, which were named Overlap, Halves and Diagonals.Nine subjects voluntarily took part in those experiments.The signal-to-noise ratio (SNR)’s spatial distributions of basic components and intermodulation components were compared under these three experimental conditions with paired t test.Results The intermodulation components’ SNR in Overlap was much larger than the ones in Halves and Diagonals, with significant differences in most of the electrodes.The latter two were both extremely weak, and the Halves’ was slightly higher than the Diagonals’.Conclusions When the stimuli’s spatial distribution is overlap, the intermodulation components of SSVEP are larger, otherwise they are weaker and may be related to the border of the stimuli.Therefore, researches related to intermodulation components of SSVEP need to take the spatial distribution of stimuli labeled with different flashing frequencies into account.