The invention belongs to the technical field of electric systems, and particularly relates to a cable drum (or called cable reel). An electric wire coil vehicle comprises the cable drum and is characterized in that a left bearing is mounted at the left end of a winding shaft, and the left bearing is connected with the upper end of a left support through a left bearing pedestal; a right bearing ismounted at the right end of the winding shaft, and the right bearing is connected with the upper end of a right support through a right bearing pedestal; the lower end of the left support is fixed tothe left side of the upper face of a trolley, and the lower end of the right support is fixed to the right side of the upper face of the trolley; a cable drum hand brake capable of limiting rotation of the winding shaft is mounted on the right bearing pedestal; and one end of a cable is electrically connected with a power socket, and the other end of the cable is electrically connected with a power supply plug. The electric wire coil vehicle has the characteristics that cable winding and unwinding are convenient and easy, cable moving and transporting are convenient, cable winding and unwinding are controllable, and cable connecting is fast.