Neuromyographic testing is an important test for the diagnosis and prognosis of neurological diseases. Due to his professionalism, technical complexity and tediousness, it is not yet known to the majority of medical personnel and patients. Patient preparation: Completed relevant laboratory tests and examinations (neuromyography is not the preferred test), showered, no fasting. Neuromyography medical technologist preparation: 1, understand the medical history and the purpose of the examination, determine the nerve, muscle and steps and items to be examined. 2.Take the appropriate lying or sitting position according to the condition. 3. Explain the purpose and method of examination to the patient to obtain the patient’s cooperation. Clinician preparation: 1. There is no fixed procedure for EMG examination, and it varies according to each case. 2. Before doing EMG, take a careful history, perform a detailed neurological examination, and make a preliminary opinion on the clinical diagnosis and the problems you want to solve with EMG. 3, the neuromyographic examiner should also be familiar with neuromuscular anatomy and physiology, and be able to determine the location of each muscle and understand its innervation. 4. Before the examination, a preliminary examination plan is developed based on the history and signs.