Abstract: A spine image registration method includes: obtaining a CT image and an MRI image corresponding to a spine; inputting the CT image into a first model to identify at least one first vertebral body of the spine in the CT image; inputting the MRI image to a second model to identify at least one second vertebral body of the spine in the MRI image; marking the first vertebral body with at least one first landmark and marking the second vertebral body with at least one second landmark; matching the first landmark with the second landmark to obtain a corresponding relationship; performing a registration on the CT image and the MRI image according to the corresponding relationship, and generating a registered image according to the content of the CT image and the content of the MRI image located in the same coordinate space; and outputting the registered image.