The invention discloses an anti-theft fire-extinguishing
transformer device including a first support, a second support, a
transformer, a storage battery, a camera and a display screen. The
transformer includes a coil rack coiled with a coil, a
magnetic core arranged in a central through hole of the coil rack, a transformer housing, an
accommodation room arranged in the transformer housing and used for accommodating fire-extinguishing devices, a heat expansion piece arranged on the
accommodation room, a
thin sheet arranged on the
accommodation room, venting ports arranged on two sides of the transformer housing, closing assemblies arranged beside the venting ports and capable of rotating for closing the venting ports, and a temperature sensor arranged in the transformer housing. According to the utility model, when a fire breaks out, the heat expansion piece expands after being subjected to heat. A
dry powder extinguishing agent squeezes the
thin sheet until the
thin sheet goes broken. Since the external air pressure is lower than air pressure in the accommodation room, the
dry powder extinguishing agent is sprayed and extinguishes the fire, so that a fire extinguishing aim is realized. At the same time, the cost is comparatively low.