The patient is a 32-year-old male, who had a cranio-cerebral trauma caused by a car accident 8 years ago, and after surgery, was left with a droopy right eyelid and hoarse voice. Initial diagnosis: the patient was bedridden, mentally fine, with droopy right eyelid, hoarse voice, frequent hiccups, no abnormal breathing rate and depth, no significant relief of retrograde after traditional treatment, considered that the abnormal activity of phrenic nerve, ready to perform phrenic nerve block treatment, the drug selection of 2% lidocaine, the dose of a total of 5 ml, B ultrasound shows the phrenic nerve, inject the drug; after injection of drug, the patient’s hiccups disappeared immediately, observation 10 minutes later, no recurrence. The patient’s hiccups disappeared immediately after drug injection, and after 10 minutes of observation, there were no further attacks, so he was sent back to the ward for further observation. The next morning, the patient complained that he had hiccups again in the afternoon only after yesterday’s block treatment, so he was advised to have another block treatment; observation was continued.