The utility model discloses an on-site full-time thermal imaging temperature detection device for a transformer substation. Enclosure, a driving motor is fixedly connected to the bottom wall of the interior of the machine shell; and the output end of the driving motor is fixedly connected with a first threaded rod, a second threaded rod is fixedly connected between the left side wall and the rightside wall of the interior of the machine shell, the first threaded rod is located on the front face of the second threaded rod, and coils are fixedly connected between the outer surfaces of the firstthreaded rod and the second threaded rod. The utility model discloses a transformer substation on-site full-time thermal imaging temperature detection device. By arranging the driving motor, when thetemperature detection device body needs to be replaced and maintained, the driving motor drives the first threaded rod and the second threaded rod to rotate synchronously through the coil and the connecting belt, the threaded sleeve drives the supporting plate and the temperature detection device body to move forwards to the exterior of the machine shell, and therefore the effect of facilitatingmaintenance is achieved.