Naked-eye 3D imaging needs to call the cell phone camera to detect the position of the human eye, the front camera of the cell phone is a certain distance away from the center of the cell phone screen, so there is a certain offset between the front camera and the human eye position detected by the front camera and the cell phone screen, and the 3D image display is the center of the two eyes detected by the front camera when the human eye looks directly at the center of the cell phone screen as the origin to switch the image. Therefore, the human eye positioning offset problem will be solved by direct measurement method and formula derivation method.