Magnetic sensing device and magnetic sensing method

The invention provides a magnetic sensing device and a magnetic sensing method, and the device comprises a substrate which is provided with a supporting surface, and is provided with a first sensing region, a third sensing region and a second sensing region which are continuously arranged in a motion direction, the first sensing area, the second sensing area and the third sensing area are respectively provided with a first center line, a second center line and a third center line in the movement direction, and the first center line and the second center line are symmetrical relative to the third center line; the first sensing area and the second sensing area are jointly used for outputting a first output signal, the third sensing area is used for outputting a second output signal, the phase difference between the first output signal and the second output signal is 90 degrees, and the first output signal and the second output signal are jointly used for determining the movement distance or speed or angle and t