A special tool for moving and mounting a metal armored tank comprises four sets of lifting and moving devices. Each lifting and moving device comprises a farm jack, a hanging plate is arranged at the lower end of a support plate of a lifting mechanism of the farm jack, the lifting mechanism is provided with a rocking handle, a hanging-plate magnetic chuck is fixedly connected to the left side of the support plate, a horizontal fixing plate is fixedly connected to the lower end of a support rod of the farm jack, a universal wheel is fixedly connected on the horizontal fixing plate and is located on the same plane with the hanging plate, the upper portion and the lower portion of the support rod are respectively fixedly provided with a fixing piece, each fixing piece comprises a magnetic chuck seat which is an L-shaped support, sliding grooves are formed in the inner surfaces of the L-shaped support horizontally and longitudinally, each sliding groove is slidably connected with a slider inside, and the slider is fixedly connected with a magnetic chuck provided with a rotary switch.