The invention provides a lamina recognition method and device. The method includes the steps that a lamina recognition model is established by combining a formation microscanner imaging (FMI) image lamina recognition template with an FMI image lamina color aberration recognition standard, and lamina recognition is carried out on an FMI image of a core interval according to the lamina recognition model; if the lamina recognition rate of the lamina recognition model on the FMI image of the core interval is larger than a preset threshold value, lamina recognition is carried out on an FMI image of a target interval through the lamina recognition model. By means of the method, the requirement for recognizing laminas and thin laminas of a deeply-buried ultra-deep reservoir with the depth larger than 6000 m can be met so as to carry out quantitative evaluation, and the recognition accuracy rate is high.