Optical fiber finished rod pickling support

The invention relates to the field of optical fibers, in particular to an optical fiber finished rod pickling support which comprises a fixed support arranged on the periphery of a pickling tank and a movable support arranged in the pickling tank, and guide columns vertically extending to the bottom end of the inner side of the pickling tank are arranged at the corners of the periphery of the fixed support; the movable support is arranged on the guide column in a sleeving mode by forming a guide opening, a lifting driver used for driving the movable support to move is arranged on the fixed support, a plurality of supporting units are arranged on the movable support at equal intervals, and each supporting unit is provided with a first end supporting assembly and a second end supporting assembly. According to the invention, the first end part supporting assembly and the second end part supporting assembly are used for fixing the preform, so that the preform is kept in a horizontal placement state on the movable