A metallic glass powder magnetic core which comprises a plurality of grains each comprising a soft magnetic metallic glass alloy and 1% by mass or less of an insulation film formed at each of grain boundaries among the plurality of grains, has a density ratio of 0.90 or more, an iron loss of 200 kW/m3 (0.1 T/50 kHz) or less in a magnetic path cross section of 10 mm, and has specific resistance of 1×105 μΩm or more.