The utility model relates to a metallized film capacitor with good explosion-proof property, belonging to the capacitor technical field, comprising a housing, an upper limiting sleeve and a lower limiting sleeve arranged in the housing; a core assembly and dipping material are arranged between the upper limiting sleeve and the lower limiting sleeve; a cover body with a terminal on the upper end is arranged above of the upper limiting sleeve in the housing, and the lower end of the terminal is connected with the core assembly through the connecting line passing through the cover body and the perforating hole of the upper limiting sleeve; the cover body is pressing sealed in the housing via the curled edge above the housing, and an explosion-proof mechanism is arranged between the terminal and the core assembly; the utility model is characterized in that the upper limiting sleeve and the lower limiting sleeve are provided with explosion-proof buffer section. The utility model has the advantages that the technical problem that the upper/lower limiting sleeve in the prior art only for limiting and insulation of the capacitor core assembly without explosion-proof property is resolved; therefore the limiting, insulation and explosion-proof buffer functions can be performed for the core assembly of the capacitor simultaneously.