Fireproof capacitor

The invention discloses a fireproof capacitor which comprises a capacitor body and a shell wrapping the outer side of the capacitor body. An isolation rubber plug of which the diameter is matched with the inner diameter of the shell is arranged between the bottom of the capacitor body and the shell; the isolation rubber plug is provided with a plurality of exhaust holes; and the bottom of the shell is provided with an anti-explosion valve port. The isolation rubber plug with the exhaust hole is arranged between the capacitor body and the shell, and the explosion-proof valve port is formed in the bottom of the shell, so that when the internal pressure of the capacitor is too large, the isolation rubber plug can open the explosion-proof valve, and electrolytic gas in the capacitor can be exhausted from the exhaust hole of the isolation rubber plug; and meanwhile, the isolation rubber plug limits the electrolytic paper in the capacitor from flying out, so that the capacitor can be effectively prevented from catc