A robotic mowing system comprising: a station and a robotic mower, wherein said robotic mower has a controller configured to control the robotic mower to return directly towards said station, a memorizer, a power source and a drive motor, wherein said memorizer is configured to store a fixed working procedure, comprising starting said drive motor; controlling said robotic mower to enter into a predetermined working area; controlling said robotic mower to mow according to a predetermined route or a random route; detecting power or a discharge time of the power source, and if the power of said power source is lower than a first predetermined value or the discharge time reaches a first predetermined time, controlling the robotic mower to return to the station to be charged; and detecting the power or a charging time of the power source, and if the power of the power source reaches a second predetermined value or the charging time reaches a second predetermined time, controlling said robotic mower to mow again; wherein in use after receiving a start command input by a user said controller executes said fixed working procedure without a working parameter input by the user so as to control said robotic mower to automatically and repeatedly mow and return to said station to be charged until said controller receives a stop command input by the user; the robotic mowing system being characterized in that said station is provided with at least one ultrasonic generator and said robotic mower is provided with at least one ultrasonic receiver, wherein in use said controller adjusts a moving direction of said robotic mower according to a receiving condition of said ultrasonic receiver when said robotic mower goes back so that said robotic mower returns towards said station; and wherein said station is further provided with an infrared generator, said robotic mower is further provided with an infrared receiver, and said ultrasonic generator and said ultrasonic receiver are configured to guide said robotic mower to return towards said station and said infrared generator and said infrared receiver are configured to guide said robotic mower to connect to said station to be charged. a station and a robotic mower, wherein said robotic mower has a controller configured to control the robotic mower to return directly towards said station, a memorizer, a power source and a drive motor, wherein said memorizer is configured to store a fixed working procedure, comprising starting said drive motor; controlling said robotic mower to enter into a predetermined working area; controlling said robotic mower to mow according to a predetermined route or a random route; detecting power or a discharge time of the power source, and if the power of said power source is lower than a first predetermined value or the discharge time reaches a first predetermined time, controlling the robotic mower to return to the station to be charged; and detecting the power or a charging time of the power source, and if the power of the power source reaches a second predetermined value or the charging time reaches a second predetermined time, controlling said robotic mower to mow again; wherein in use after receiving a start command input by a user said controller executes said fixed working procedure without a working parameter input by the user so as to control said robotic mower to automatically and repeatedly mow and return to said station to be charged until said controller receives a stop command input by the user; the robotic mowing system being characterized in that said station is provided with at least one ultrasonic generator and said robotic mower is provided with at least one ultrasonic receiver, wherein in use said controller adjusts a moving direction of said robotic mower according to a receiving condition of said ultrasonic receiver when said robotic mower goes back so that said robotic mower returns towards said station; and wherein said station is further provided with an infrared generator, said robotic mower is further provided with an infrared receiver, and said ultrasonic generator and said ultrasonic receiver are configured to guide said robotic mower to return towards said station and said infrared generator and said infrared receiver are configured to guide said robotic mower to connect to said station to be charged.