Magnetic field sensing device

The invention provides a magnetic field sensing device. The magnetic field sensing device comprises at least one magnetoresistive sensor and a magnetization direction setting element, the magnetization direction setting element is arranged beside the at least one magnetoresistive sensor. The magnetization direction setting element is provided with a current inlet and a current outlet which are opposite to each other. The at least one magnetoresistive sensor is located between the current inlet and the current outlet, and an orthographic projection of at least a portion of the at least one magnetoresistive sensor overlaps an orthographic projection of the magnetization direction setting element. The magnetization direction setting element further includes a plurality of current path adjustment structures. The plurality of current path adjusting structures are located in an area between the current inlet and the at least one magnetoresistive sensor and are used for defining current distribution of current from