Rapidly-adjusted light supplementing device

The utility model relates to the technical field of light supplement, in particular to a fast-adjusting light supplement device which comprises a base, a mounting hole is formed in the bottom of the base, a connecting mechanism with a threaded cylinder is arranged at the bottom of the base, a light supplement mechanism with a supporting seat is arranged at the top of the base, and a mounting groove is formed in the top of the base. The output end of a pneumatic push rod pushes supporting legs to move to a proper length, so that the supporting stability of the device in the using process is enhanced, an output shaft of a stepping motor drives a rotating shaft and a mounting plate to rotate, a proper angle is convenient to adjust, a connecting rod and a sliding connecting block are rotated, the connecting rod is separated from a threaded cylinder, and parts are convenient to replace; the light supplementing device is very convenient, saves time and energy, detects the environment light condition through the env