Abdominal pain after eating fungus is considered to be related to indigestion, gastroenteritis, food poisoning and so on. 1. indigestion: fungus is not easy to digest food, eating too much fungus or poor digestive function after eating will appear indigestion, resulting in abdominal pain. 2. Gastroenteritis: If you are not careful when cleaning fungus, eating unclean fungus can lead to gastrointestinal infections, which can manifest as abdominal pain, diarrhea and other symptoms. 3. Food poisoning: fungus soaking time is too long may produce toxins, consumption can cause food poisoning, manifested as nausea and vomiting, abdominal pain and diarrhea symptoms. Eating fungus after abdominal pain may also be related to other causes, it is recommended to seek medical attention to clarify the cause of pain, and standardized treatment under the guidance of a doctor.