1.Neuromyography is a means to assist in the diagnosis of neuromuscular diseases with the help of electrophysiological techniques; 2.If necessary, needle electromyography and/or evoked potential examination will be performed during the examination, which may cause slight numbness and pain. Patients with severe bleeding, infectious diseases, serious heart diseases, pacemakers, etc., and patients suffering from acupuncture, please explain to the doctor beforehand; 4, you should not fast before the examination; 5, please clean your whole body before the examination and wear loose clothes to facilitate the examination; 6, please make sure to bring your outpatient medical history card or inpatient medical record and related information, including previous EMG reports; 7, make sure to arrive on time for the appointment, after the appointment time, you need to reschedule the examination; 8, patients with myasthenia gravis 24 hours before the examination Discontinue the use of Stigmine drugs; 9. The neuromyography examination only represents the results of the current examination, and there is a certain amount of error, which should be taken into account.