The invention relates to the technical field of sockets, in particular to a combined socket with a retractable socket surface. The combined socket comprises a socket body, fixing plates are arranged at the outer portions of the two sides of the socket body, a base is fixed between the bottom portions of the fixing plates, the socket body is arranged at the top of the base, adjusting mechanisms arearranged at the connections of the socket body and the fixing plates, jack grooves and mounting grooves are respectively arranged at the bottom portions of two sides, adjacent to the adjusting mechanisms, of the socket body, rotating grooves are respectively arranged at the top of one ends, far away from the base, of the fixing plates, fixing shafts are arranged between the rotating grooves, baffles are respectively rotationally arranged in the fixing shafts, a first limiting plate and a second limiting plate are respectively arranged on the opposite sides of the baffles, connecting through holes are respectively arranged at two ends of the first limiting plate, necks are respectively arranged at two ends of one sides of the fixing plates, and buckles are respectively installed at two ends of one sides, opposite to the necks, of the fixing plates. The combined socket is convenient to adjust the socket and can retract the socket surface so as to improve the service life of the socket.