The invention relates to a metallized film capacitor, which aims at eliminating defects generated by an external terminal portion of the metallized film capacitor received in a box, and making wet fastness, vibration resistance, etc. in a long-term stableness under a condition of use in a wider range of temperature. The metallized film capacitor is characterized in that, the external terminal is provided with: a body part through an external surface to an inner surface of a sealing member; a flange part disposed on the body part in a contact with the internal surface of the sealing member; a block ring in a contact with the external surface of the sealing member; a groove part disposed on the body part and used for fixing the block ring; the sealing member is provided with through holes through the external surface to the internal surface, insulating resin is injected from the through holes into the internal of a box, and is made to overflow from the through holes to the external surface.