The present invention relates to a shield method and shield for fine magnetic measurements. More specifically has a precision magnetic sensor therein, in a shielding device for shielding the external magnetic field, the sample in the magnetic field generator fine magnetic measurements that include for exciting, and to seal the measurement space within the conductivity including a shielding wall and of the divided plurality conductivity metal layer and that provided with a conductivity metal layer and an enclosed high permeability soft magnetic material layer of a predetermined distance apart with a high frequency shielding, shielding the external magnetic field, and this magnetic field generated from the magnetic-field generating device to block the flow of induced eddy currents due to for fine measurement of the magnetic field, it characterized in that the magnetic field generated from the eddy current to prevent the interference in the measurement of a fine magnetic field shield, and, provided with a precision magnetic sensor therein, the micro-sample in an apparatus for measuring a magnetic field according to the shielding device for shielding the external magnetic field, classic By a closed shield having a high conductivity metal layer and that the shielding wall and the measurement space therein and equipped with a predetermined distance spaced apart from the inside of the conductivity of the metal layer having a high low-frequency magnetic field shielding property of the magnetic permeability has a magnetic permeability soft magnetic material layer having a high frequency cutoff of the rate room; High permeability plurality of holes formed in each vertex soft magnetic material layer; Hall and adjacent addition and the coil is inserted in the other hole is opened permeability coil is wound around the edge, each of the magnetic material layer formed of a plurality of the coil; And to a shielding device for the fine measurement of the magnetic field comprises applying unit configured to apply a power supply current to the coil.