Diaphragmatic palsy is a paralytic rise of the diaphragm on one or both sides due to damage to the phrenic nerve and blockage of nerve impulses, resulting in impaired movement. Long-term diaphragmatic palsy can produce atrophy of the diaphragm to form a membrane. One side of diaphragmatic palsy can reduce lung volume by 37% and ventilation by 20%, but due to compensatory effects, patients are often asymptomatic and have shortness of breath only in the prone position, which is due to the restricted movement of the healthy diaphragm in the prone position. Left-sided diaphragmatic palsy may have belching due to an elevated gastric fundus, and gastrointestinal symptoms such as bloating and abdominal pain. Both sides of diaphragmatic palsy present with cyanosis, marked dyspnea, telangiectatic breathing and hypoxemia. So how do we prevent diaphragmatic palsy? 1. No emotional stimulation, anger, shock, etc.; 2. Pay good attention to keeping warm and not getting cold.