It is quite common for major companies that pay attention to practical operation to arrange internships and training for students at different times and select outstanding people to enter the company. Students with solid professional foundation, excellent personal comprehensive quality and potential are favored by various companies. Motor threshold, abbreviated as MT, is the minimum head stimulation intensity that can be recorded when the motor cortex is stimulated to record the muscle motor complex potential (that is, the motor evoked potential) of the corresponding target muscle. Mainly used to evaluate the excitability of corticospinal tract. After spinal cord injury or stroke, the exercise threshold will increase significantly, and the low threshold indicates that the corticospinal tract is highly excitable. Generally, transcranial magnetic stimulation technology is mainly used for measurement.