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The acoustic emission(AE)real time monitoring of fatigue damage of pump rods samples during fatigue test was introduced.Under severe environmental noise caused by vibration,the real time monitoring of the fatigue crack initiation and expansion was realized successfully by using the parameters analysis method combined by AE Hits and Amplitude.The characters of the methods are simple and real time,which can provide a more accurate and impersonal basis for judging whether the fatigue test piece has been destroyed,thus can provide a scientific assistant method for accurately determining the life of pump rod.