Old people accompanying device based on holographic projection

The invention discloses an old people accompanying device based on holographic projection. The device comprises a box body and a holographic projection imaging device arranged in the box body; a projection cavity is formed in the middle of the box body; a lifting bracket and a mounting plate fixedly connected to the lifting bracket are arranged below the projection cavity; and the holographic projection imaging device comprises a projection device arranged above the projection cavity and an imaging device arranged on the mounting plate, wherein the projection device is used for projecting a holographic projection source image on the imaging device for displaying the image. The old people accompanying device can be applied to old people accompanying; the three-dimensional display of the image is realized through the holographic projection imaging device, so that a sense of reality is stronger, and the old people can have better emotion experience; through the lifting mechanism, the position of the imaging devi