The invention discloses a novel efficient nitrogen compressor motor circulating cooling device, and the device comprises a moving mechanism, wherein damping mechanisms are symmetrically arranged abovethe moving mechanisms, and a water cooling mechanism is arranged between the damping mechanisms; meanwhile, the water cooling mechanism is arranged on the moving mechanisms, and a supporting plate isarranged above the damping mechanisms; a nitrogen compressor motor body and an air cooling mechanism are arranged on the supporting plate; meanwhile, the motor body is connected with the supporting plate through a connecting piece, the motor body is connected with the water cooling mechanism, and the motor body is arranged on the left side of the air cooling mechanism. According to the novel efficient nitrogen compressor motor circulating cooling device, the damping mechanism is arranged, and a damping air bag and a damping spring in the damping mechanism can deform when the motor body vibrates, so the impact on the motor body during vibration of the motor body can be reduced; therefore, the motor body is prevented from being damaged due to vibration, the motor body is protected, and theservice life of the motor body is prolonged.