The invention discloses an adjustable projector bracket which comprises a bracket body, a lifting assembly, a mounting rod, an angle adjusting component and a spacing adjusting component. The mountingrod is provided with a mounting hanging bracket I, a mounting hanging bracket II and a mounting hanging bracket III which are used for installing projectors in a sleeved manner in the axial directionof the mounting rod at intervals; and the mounting hanging bracket I and the mounting hanging bracket III can slide in the axial direction of the mounting rod, and the mounting hanging bracket II isfixed on the mounting rod. By means of the adjustable projector bracket, the three projectors can be installed on the mounting rod, the spacing of the three projectors can be adjustable, the projection angle and the projection height of the projectors can be adjusted, the adjustment mode is easily and conveniently operated, the adjustment accuracy is high, the projector bracket can be moved, and the adjustable projector bracket is suitable for scenarios such as virtual simulation experiments, indoor scientific research experiments and scientific research meetings needing high-quality projection fusion.