A charging station capable of guiding a self-driving device to interface includes a base plate (72) installed in a working area to fix the self-driving device (10); a first wire (73) surrounding on the base plate and connected to a signal generator (75) independently of a boundary; a second wire (74) surrounding on the base plate and connected to the signal generator independently of the boundary and the first wire; and the signal generator sending a guide signal to the first wire and/or the second wire; where multiple areas surrounded by the first wire and the second wire include at least a first area having a first magnetic field signal, a second area having a second magnetic field signal, and a third area having a third magnetic field signal.