The present invention relates to a three-dimensional posture holding device, the three-dimensional posture holding device to maintain the posture by three-dimensionally changing the position of the object in a state in which the object is fixed, the lower base provided to be fixed to the floor; An intermediate base provided to be movable in one direction on the lower base; A lower jig including an upper base provided on the intermediate base so as to be movable in a direction orthogonal to the moving direction of the intermediate base; And a base plate fixed to the upper base of the lower jig. An angle block seated on the base plate and provided so as to be able to swing; A rotation plate inserted into the angle block and rotatably provided; A vise plate fixedly coupled to the rotating plate; Provided is a three-dimensional posture retaining device including a; a plurality of vices that move in the same direction as the swinging direction of the angle block on the vise plate and clamp the object in the center of the vise plate.
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