Clamp capable of flexibly adjusting height

The utility model discloses a clamp capable of flexibly adjusting height, which comprises a bottom plate, a vertical rod is screwed on the bottom plate through threads, a fixed frame is fixed on the top of the vertical rod through a screw, and a pulling mechanism which slides along the horizontal direction is arranged on the side surface of the fixed frame. The pulling mechanism comprises two first sliding rods, a holding rod, a vertical block and two first springs, the first sliding rods penetrate through the side face of the fixing frame, and one ends of the first sliding rods are fixedly connected with the end of the holding rod through screws; the position of a vertical block can be changed by horizontally moving a holding rod, a second sliding rod is vertically moved, the vertical block is attached to a stabilizing block, first teeth and second teeth are distributed in a staggered mode, the stabilizing block is clamped between the vertical block and a fixing frame, the stabilizing block is in a stable st