The invention relates to the technical field of electrical equipment, and discloses a practical electrical equipment fireproof device which comprises a shell. A transmission shaft is arranged in the shell, a rotating disc is arranged on the surface of the transmission shaft, a push rod is arranged on the lower surface of the rotating disc, and a rotating rod is movably connected to the end, away from the rotating disc, of the push rod; and an auxiliary spray head is arranged at the lower end of the rotating rod, a rotating cylinder is movably connected to the end, away from the shell, of the transmission shaft, a ratchet wheel is arranged in the rotating cylinder, a first gear is arranged on the surface of the end, close to the rotating cylinder, of the transmission shaft, and a transmission gear is arranged in the rotating cylinder. According to the practical electrical equipment fireproof device, through cooperative use of the transmission shaft and the rotating disc, cooperative use of the rotating disc and the push rod and cooperative use of the rotating rod and the auxiliary spray head, the auxiliary spray head can achieve a reciprocating rotation effect, the spraying area of the auxiliary spray head can be effectively increased, the fireproof effect of electrical equipment is good, and fireproof protection of the electrical equipment is facilitated.