A working system, comprising a working region, a self-traveling working machine that performs a work in the working region, a station configured to charge the working machine, wherein the working region includes a narrow path, extending in a predetermined direction, whose width is narrower than a predetermined reference, and is divided into a first region and a second region, which are adjacent to each other, a boundary portion between the first region and the second region extending in the predetermined direction such that the first region and the second region divides the narrow path extended in the predetermined direction, the station is installed at any position of the boundary portion, the working machine comprises: a signal detection unit configured to detect signals representing the first region and the second region; and a traveling control unit configured to cause the working machine to travel such that a value of the signal detected by the signal detection unit becomes a desired value, wherein during traveling of the working machine in one region of the first region and the second region, if a detection result by the signal detection unit for a signal representing the other region satisfies a reference, the traveling control unit causes the working machine to travel based on the signal representing the other region, characterized in that, during traveling of the working machine in the one region, the traveling control unit causes the working machine to travel along an inner peripheral portion of the one region while detecting a signal representing the one region by the signal detection unit such that a value of the signal representing the one region maintains a first value (Ki), and, if the detection result by the signal detection unit for the signal representing the other region satisfies the reference, the raveling control unit causes the working machine to travel along an outer peripheral portion of the other region such that a value of the signal representing the other region maintains a second value. the working region includes a narrow path, extending in a predetermined direction, whose width is narrower than a predetermined reference, and is divided into a first region and a second region, which are adjacent to each other, a boundary portion between the first region and the second region extending in the predetermined direction such that the first region and the second region divides the narrow path extended in the predetermined direction, includes a narrow path, extending in a predetermined direction, whose width is narrower than a predetermined reference, and is divided into a first region and a second region, which are adjacent to each other, a boundary portion between the first region and the second region extending in the predetermined direction such that the first region and the second region divides the narrow path extended in the predetermined direction, the station is installed at any position of the boundary portion, the working machine comprises: a signal detection unit configured to detect signals representing the first region and the second region; and a traveling control unit configured to cause the working machine to travel such that a value of the signal detected by the signal detection unit becomes a desired value, wherein during traveling of the working machine in one region of the first region and the second region, if a detection result by the signal detection unit for a signal representing the other region satisfies a reference, the traveling control unit causes the working machine to travel based on the signal representing the other region, characterized in that, during traveling of the working machine in the one region, the traveling control unit causes the working machine to travel along an inner peripheral portion of the one region while detecting a signal representing the one region by the signal detection unit such that a value of the signal representing the one region maintains a first value (Ki), and, if the detection result by the signal detection unit for the signal representing the other region satisfies the reference, the raveling control unit causes the working machine to travel along an outer peripheral portion of the other region such that a value of the signal representing the other region maintains a second value. a signal detection unit configured to detect signals representing the first region and the second region; and a traveling control unit configured to cause the working machine to travel such that a value of the signal detected by the signal detection unit becomes a desired value, wherein during traveling of the working machine in one region of the first region and the second region, if a detection result by the signal detection unit for a signal representing the other region satisfies a reference, the traveling control unit causes the working machine to travel based on the signal representing the other region, characterized in that, during traveling of the working machine in the one region, the traveling control unit causes the working machine to travel along an inner peripheral portion of the one region while detecting a signal representing the one region by the signal detection unit such that a value of the signal representing the one region maintains a first value (Ki), and, if the detection result by the signal detection unit for the signal representing the other region satisfies the reference, the raveling control unit causes the working machine to travel along an outer peripheral portion of the other region such that a value of the signal representing the other region maintains a second value.