Symptoms of diaphragmatic hernia include shortness of breath, cyanosis, vomiting, abdominal pain, etc. The disease can be divided into three categories: congenital diaphragmatic hernia, traumatic diaphragmatic hernia, and esophageal hiatal hernia, and the clinical manifestations of different types of the disease can be different. 1. congenital diaphragmatic hernia: clinical manifestations are diverse, hiatus can be small without obvious symptoms, hiatus is large, can make a large number of abdominal organs hernia into the thoracic cavity, resulting in cardiac and pulmonary compression, triggered by shortness of breath, cyanosis, tachycardia, abdominal pain, nausea, vomiting and other symptoms, the condition of the severe cases can also appear respiratory and circulatory failure. 2. Traumatic diaphragmatic hernia: the trauma is relatively light to cause the fissure is small, the patient can be no obvious clinical symptoms, if the chest and abdominal trauma is serious, resulting in diaphragmatic damage, the patient can appear hemorrhagic shock, dyspnea, cyanosis, hypotension, hypoxemia and other symptoms. 3. Esophageal hiatal hernia: the main symptoms include belching, vomiting, retrosternal discomfort, retrosternal pain, abdominal pain, dysphagia and other symptoms. When the above symptoms occur and diaphragmatic hernia is suspected, it is recommended that the patient seek medical attention in time to avoid delaying the condition.