Leaky gut may present with abdominal pain, fever, nausea, vomiting, dehydration, electrolyte disorders, malnutrition and other symptoms. 1. Abdominal pain: Leakage in small intestine usually occurs in the early stage of severe pain. Leakage in the large intestine usually occurs later, and the pain is mainly hidden. 2. Fever: leaky gut can easily cause bacterial infection and fever. 3. Nausea and vomiting: damage to the intestinal wall or irritation of the intestinal contents can cause nausea and vomiting. 4. Dehydration: due to vomiting and outflow of fluid from the intestines, it is easy to cause loss of body fluids in the body, resulting in dehydration. 5. Electrolyte disorders: loss of body fluids can easily cause electrolyte disorders. 6. Malnutrition: long-term nutrition and body fluid loss will make the patient suffer from malnutrition. When the above symptoms occur, it is recommended to go to the hospital in time.