The utility model provides an anchor clamps suitable for four -axis machine tool machining turbine blade sagittal plane, relates to the anchor clamps of processing turbine blade sagittal plane. The utility model discloses a solve and to utilize plain clamp and the not high problem of ordinary triaxial machine tool machining turbine blade precision in the past. An anchor clamps suitable for four -axis machine tool machining turbine blade sagittal plane, includes vice clamp utensil and vice fixing device, vice fixing device includes thimble seat, tailstock, four cylindric locks and bottom plate, the thimble seat sets up the one end at the bottom plate, and the tailstock setting is at the other end of bottom plate homonymy, be equipped with a plurality of planes fixed orifices on the installation face of bottom plate, be provided with a plurality of sides fixed orifices on the bottom plate side, the installation face of bottom plate is provided with four bottom plate cylinder pinholes, constitutes complete cylinder pinhole with the foot block cylinder pinhole of foot block and the tailstock cylinder pinhole of tailstock respectively, the cylindric lock sets up downtheholely at the cylindric lock. The utility model discloses fit the processing of turbine blade sagittal plane.