Abstract: A new technique of exciting a high level random vibration by the disk process tool resonance on the vibration stage is put forward for high level random vibration tests. The vibration characteristics of the disk process tool on the vibration stage are analyzed, and the structure response amplification equipment is designed. Then the structure response amplification by the disk process tool resonance is used to achieve the step random vibration of the servo machine, and the technique of exciting a high level random vibration by the disk process tool resonance is validated.