The invention discloses an uninterrupted power supply for a construction site, which comprises a power supply box, a dust collector, a wire gathering box and a fixing bolt, wherein the outer surface of the front end of the power supply box is fixedly connected with a control panel; the outer surface of the front end of the control panel is fixedly connected with a display screen, an indicating lamp and a power supply switch; both the indicating lamp and the power supply switch are located below a display screen; the indicating lamp is located at one side of the power supply switch; the outer surface of the bottom end of the power supply box is provided with a shock absorber; the outer surface of the lower end of the shock absorber is provided with a sleeve; and the outer surface of the bottom end of the sleeve is fixedly connected with a rubber pad. According to the uninterrupted power supply for a construction site, as the dust collector, the wire gathering box and the shock absorberare arranged, dust can be prevented from entering the inner part of the power supply box while cooling, the power supply use range can be expanded, practicality is realized, damages to the inner structure of the power supply box by shocking can also be reduced, and a better use prospect can be brought.