The invention discloses a dual-channel spectral-domain optical coherence tomography imaging method, which comprises the steps that a coherence light beam irradiates to a sample to be tested through a first light path, and a first reflected light beam and a second reflected light beam are generated when the coherence light beam passes through the same section in the sample to be tested; the first reflected light beam passes through a first imaging channel to the input end of a first spectroscope, and the second reflected light beam passes through a second imaging channel to the first input end of a second spectroscope and is output to the input end of the first spectroscope by the first output end of the second spectroscope; first reflected light output by the output end of the first spectroscope and second reflected light both irradiate to a second light path; an interference spectrum is collected; when the sample to be tested deforms, in-plane displacement and out-plane displacement in the sample to be tested are calculated out according to the interference spectrum. By means of simultaneous tomography of the same section in the sample to be tested, the out-plane displacement and the in-plane displacement can be measured at the same time. The invention discloses a dual-channel spectral-domain optical coherence tomography imaging system which has the same effects as the dual-channel spectral-domain optical coherence tomography imaging method.