The invention relates to a waterstop clamp, which comprises a clamping element and two hanging and connecting elements, wherein the clamping element comprises two clamping arms; the two clamping arms are mutually connected and can move relative to each other; the two hanging and connecting elements are respectively connected with the corresponding clamping arms; and the tail end of each hanging and connecting element forms a hook shape. During the construction period, when the waterstop clamp is used, a waterstop can be firmly fixed; and the waterstop can be enabled to be arranged in the required position.