nondestructive evaluation (NDE) is an analysis technique used to evaluate the properties of a material, component, structure or system without causing damage. In this paper, we introduce a novel mixed reality system for NDE training. In particular, we model and simulate the inspected object and the inspection probe. The operator trainees with the wearable headsets are able to move and zoom the inspected object in a mixed environment, i.e., reality with virtual objects overlaid. In addition, the trainees use their gaze, gesture, and voice to control and interact with the virtual objects within the NDE training session. They can also access the help manual in order to follow the training instruction. The system is successfully operated on HoloLens, the state-of-the-art mixed reality headset. Evaluational results demonstrate that the use of mixed reality training provides significant benefit for the potential technician trainees.