Provided is a metallized polypropylene film having excellent insulation breakdown resistance properties. The metallized polypropylene film of the present invention has a thickness of 0.5 to 4.0 μm and has a feature such that the number of insulation breakdown points multiplied by thickness, as determined under predetermined measurement conditions for measuring the number of insulation breakdown points, is 1.90 (points/cm2)·μm or less.