Symptoms of severe abdominal infection include abdominal pressure pain, rebound pain, metastatic pain, radiating pain, nausea, vomiting and fever. 1. Abdominal pressure pain: the patient’s epigastrium, periumbilical region and right lower abdomen will have the symptom of abdominal pressure pain. 2. Rebounding pain: when you leave the abdomen after pressing with your finger, you can feel pain at the place of pressing. 3. Metastatic pain: with the progress of the disease, the pain will be metastatic. 4. Radiating pain: mainly radiates to the back and back shoulder. 5. Nausea: often occurs after a full meal. 6. Vomiting: Vomiting starts with stomach contents and then changes to bile-containing vomit. 7. Fever: Infection with intestinal obstruction may result in a high fever accompanied by chills. If any of the above symptoms occur, it is recommended to consult a doctor in time to identify the cause of the disease and treat it actively.