The invention provides a safe distance discharging device. The safe distance discharging device comprises an insulating bracket, a first metal rod installed on the insulating bracket, a second metal rod connected to the ground, an executing mechanism for adjusting the distance between the front end of the first metal rod and the front end of the second metal rod, and a high voltage analog circuit of which the output end is electrically connected with the first metal rod; and the front ends of the first and second metal rods are provided with discharging balls. The distance between two metal balls is regulated by controlling the stretching and retreating of an electric push rod, while the discharging space is less than the safe distance, the air breakdown is produced, the electric arc is generated and obvious discharging sound is generated too so that the maintenance worker of power operation can realize the inadequate high voltage safe distance which causes the serious hazard.