Novel self-starting fire extinguisher

The utility model discloses a novel self-starting fire extinguisher which comprises a bottle body, an outlet part, a rupture disk and an electric detonator, wherein the outlet part is arranged on the bottle body in a matched mode; the rupture disk is arranged on the bottle body; and the electric detonator is arranged on the outlet part and is positioned above the rupture disk. According to the mode, the self-starting fire extinguisher in the utility model has the advantages that the sealing performance of the fire extinguisher can be improved, the daily leakage problem is solved, and the self-starting fire extinguisher is simple in structure and good in service effect.