Abstract: A floor cleaning device includes a sensing module, a driving module, a sweeping module and a processing module. When the floor cleaning device moves into a signal area defined within a floor surface by an emitter signal emitted from a signal terminal, the sensing module outputs a sensing signal to the processing module while receiving the emitter signal from the signal terminal. The processing module activates, in response to receipt of the sensing signal, the sweeping module to gather dirt particles from the floor surface, and controls the driving module to operate in a multi-moving mode in such a way that a housing of the floor cleaning device is driven by the driving module to move within the signal area until a duration counting from initial receipt of the sensing signal reaches a cleaning time period.