The invention discloses a submarine cable winding test device and a method for operating the same, and relates to submarine cable test devices. By the aid of the submarine cable winding test device and the method, problems of inaccurate test results, high test cost and labor intensity and poor transmission stability of existing submarine cable winding testers can be solved. The submarine cable winding test device comprises a large truss frame, a left winding reel, a right winding reel, a cable laying machine, a winch and a control room. A controller is arranged in the control room, and the large truss frame comprises a first upright column, a second upright column, a third upright column and a transverse beam; the winch and the cable laying machine are arranged on the transverse beam, the cable laying machine is arranged in the middle of the transverse beam, the winch is positioned at the right end of the transverse beam, the left winding reel and the right winding reel are positioned below the transverse beam, a main guide rail is arranged on the transverse beam, and a left lower guide rail and a right lower guide rail are respectively arranged on the left side and the right side of the cable laying machine; the left winding reel and the right winding reel are respectively provided with a plurality of concentric fences, and each two corresponding fences are grouped to form a winding limit disc. According to the technical scheme, the submarine cable winding test device and the method have the advantages that the labor intensity can be lowered, procedures are controllable, accordingly, operational errors can be reduced, and the accuracy of data further can be improved.