The utility model discloses a protective device for transformer substation monitoring equipment. The two ends of the lower surface of the protection box are each movably connected with a pair of universal wheels. A partition plate is horizontally and fixedly connected in the middle of the protection box; the protective box is provided with an upper box door and a lower box door at the upper and lower ends of the clapboard; the upper surfaces and the lower surfaces of the lower box door and the upper box door are slidably connected with the protection box through sliding plates. The beneficialeffects of the utility model are that: the utility model discloses a beneficial effect is: Monitoring equipment of a transformer substation is placed in a protection box; gear engagement transmissionis utilized to realize opening and closing of the protective box cover plate; the solar cell panel can conveniently store electricity on sunny days, rain-proof protection can be carried out on rainy days, more energy is saved, the environment is protected, the motor is driven to rotate under the monitoring equipment, a transformer substation can be conveniently monitored by 360 degrees, heat dissipation of the protection box is achieved through gear engagement transmission, and electrical equipment can be conveniently maintained.