The disclosure relates to a method of fabricating a test socket that supports a probe stretchable in a longitudinal direction. The method of fabricating a test socket includes forming a coupling block by joining an insulating member of an insulating material to one surface of a base member of a conductive material, forming a probe accommodating hole for accommodating the probe in the coupling block and a first support hole for supporting one end portion of the probe, forming a second support hole in a cover member of an insulating material for supporting the other end portion of the probe, inserting the probe into the probe accommodating hole so that the one end portion of the probe is supported by the first support hole, and joining the cover member to the other surface of the base member so that the other end portion of the probe is supported by the second support hole.