Multilayer composite projection system

The utility model discloses a multi-layer composite projection system, which comprises an inner-layer projection screen, a middle-layer projection screen and an outer-layer projection screen which are sequentially arranged towards a viewing direction, the inner-layer projection screen, the middle-layer projection screen and the outer-layer projection screen are arranged at intervals, and the inner-layer projection screen and the middle-layer projection screen are transparent curtains. And the outer-layer projection screen is a non-transparent screen. According to the utility model, large-size pictures can be displayed, spectacular scenes can be created, and the effect similar to naked-eye 3D is realized; in addition, the high light transmission can be ensured, the picture is still beautiful, the color is bright and full, each layer of projection screen is light, thin and transparent, the installation mode is not limited, the projection screen can be unfolded and folded, the folded projection screen can be mad