Assembly for supporting substrate and apparatus for processing substrate

In accordance with an exemplary embodiment of the present invention, an assembly for supporting substrate, the assembly comprising: a support frame having at least one insertion hole recessed from one surface of the support frame, the insertion hole having an inner movement hole and a screw hole positioned outside the inner movement hole; and a substrate support member including a shaft body inserted into the insertion hole with one end of the shaft body and a pin shaft connected to the shaft body to support the substrate in contact, wherein the shaft body having an inner screw body inserted into the insertion hole and positioned in the inner movement hole and a connection body disposed between the inner screw body and the pin shaft and positioned in the screw hole, wherein the inner diameter of the screw hole is smaller than the diameter of the inner movement hole and the outer diameter of the inner screw body, the inner screw body is capable of passing through the screw hole by rotation.