The invention relates to a magnetic-bias currency detecting magnetic head with sensitive direction parallel to a detection face. The currency detecting magnetic head comprises a magnetoresistive sensor chip and a magnetic-bias unit, wherein the magnetic-bias unit and the magnetoresistive sensor chip are separately placed on one side of the magnetoresistive sensor chip away from the detection face of the currency detecting magnetic head. The magnetoresistive sensor chip comprises a bridge circuit provided with a magnetic sensitive element on a bridge arm, the sensitive direction of the magnetic sensitive element is parallel to the detection face of the currency detecting magnetic head, and the magnetic-bias unit is provided with a sunken structure which is set to enable a component of a magnetic field produced by the magnetic-bias unit to be small so as to enable the magnetic sensitive element to work in a linear region. The magnetic-bias currency detecting magnetic head has high sensitivity and signal to noise ratio.