Abstract: Acoustic emission localization technology is widely used to locate the impact source in the space debris impact. The propagation mechanism of acoustic signals in structures is very complex because of the complex characteristics of the structure itself and multiple impacts involved. The complexity of the propagation mechanism leads to the input randomness in the algorithm, while the complexity of multiple impacts leads to the curved path of the acoustic emission signal propagation. The acoustic emission localization of the space debris impacting on an aluminum alloy plate is discussed in this paper, and a bending effect model is established as Gamma distribution, which considered the randomness of the propagation path, and Delta-T method is employed to locate the acoustic source. A simulation is presented to demonstrate the capability of the model and the algorithm at last. The method proposed can be used for impact source location and damage assessment of space debris impacting.