Disclosed is a socket assembly comprising multiple sockets, into which electric plugs or USB terminals can be inserted, connected continuously such that the interval between the plug insertion hole of a socket, into which a plug is inserted, and the plug insertion hole of another socket arranged adjacent thereto can be adjusted. The present invention provides a socket assembly comprising multiple unit sockets hinge-coupled to each other such that the shape can be varied, wherein each unit socket comprises: a body portion configured as a polyhedron; at least one hinge coupling portion provided near a corner portion of the body portion to be integrated with the body portion; an insertion hole portion provided on a surface of the body portion such that a plug or a USB terminal is inserted therein; and first and second power supply members provided on the body portion and the hinge coupling portion, respectively, to supply the insertion hole portion with power.