Illuminating lamp with height adjusting function

The utility model provides an illuminating lamp with a height adjusting function, which comprises a protection box, a first bearing is fixedly embedded in the inner bottom wall of the protection box, a second bearing is fixedly embedded in the inner top wall of the protection box, the inner ring of the first bearing is fixedly connected with a threaded cylinder, and the inner ring of the second bearing is fixedly connected with the threaded cylinder. The top end of the threaded cylinder penetrates through the second bearing and extends to the position above the protection box, a first gear is fixedly connected to the outer surface of the threaded cylinder, and a through hole is formed in the right side face of the protection box. According to the illuminating lamp with the height adjusting function, through cooperation of a threaded cylinder and a threaded rod, when a rotating rod is rotated, a second gear can drive a first gear to rotate, rotation of the threaded cylinder is achieved, the threaded rod can mo