The present invention relates to a fixation device for orthopedic surgery, and more particularly, to a fixation device for an orthopedic surgical operation, which can stably and securely fix a bone irrespective of the shape or thickness of a bone, thereby performing a surgical procedure quickly and easily, It is possible to minimize the damage of the human body tissue when the bone is fixed and to prevent the interference with the movement or operation of the operation robot by making various modifications of the installation form and the installation structure according to the purpose, To a fixture for surgical operation. A fixture for orthopedic surgery according to the present invention, comprising: a clamp body； A first clamp member formed on the clamp main body； A second clamp member disposed to face the first clamp member and movably installed in the clamp main body； A clamp fixing member installed on the clamp main body to fix the second clamp member in a fixed position； And a support member having one end connected to one of the clamp main body, the first clamp member, and the second clamp member, and the other end connected to the clamp mounting portion, wherein the first and second clamp members comprise a clamp body, Wherein at least one of the first and second clamp members is configured to be detachable from the clamp body and the tight contact unit separated from the clamp body is disposed at a position And a position adjusting member detachably attached to the clamp body so as to be adjustable. Since the position adjusting members having various shapes and lengths are integrally coupled to the first and second clamp members in a detachable structure, the position adjustment can be performed according to the position and shape of the bone to be performed. It is possible to stably fix the contact portion including the member while appropriately changing it. Accordingly, the operation of fixing the bones in the orthopedic surgical light can be performed
