The invention discloses an intelligent fire extinguisher capable of automatically alarming, which consists of three parts of a sensing system, an alarm system and a fire-extinguishing system, wherein the sensing system mainly comprises a heat-sensitive sensor, a protective shell and necessary wires; the alarm system mainly comprises a sound production control circuit, a loudspeaker, a shell and so on; and the fire-extinguishing system mainly comprises an electrically operated valve, a manual valve, a conduit pipe and a spray pipe, wherein one end of the conduit pipe is connected with a running water pipe and the other end of the conduit pipe is connected with the spray pipe through the manual valve; the electrically operated valve is arranged on a joint of the conduit pipe and the runningwater pipe; and the manual valve is arranged on a joint of the conduit pipe and the spray pipe. The intelligent fire extinguisher capable of automatically alarming has the advantages that the intelligent fire extinguisher is safe and convenient, has strong realizability, and is suitable for fire prevention and fire extinguishment of the prior household kitchens and so on.