Methanol poisoning can have the following symptoms: 1. For the digestive system there will be obvious abdominal pain and bloating, especially with its surrounding colic, abdominal pain accompanied by nausea, vomiting, acid reflux, heartburn and other conditions, and there will be obvious diarrhea, the diarrhea material is the contents of the gastrointestinal tract, accompanied by mucus pus and blood stools. Severe patients may also experience upper gastrointestinal bleeding, i.e., vomiting blood or lower gastrointestinal bleeding, i.e., black stool.2 Methanol poisoning can cause circulatory symptoms, such as chest tightness, shortness of breath, palpitations, precordial discomfort, chest pain, and in severe cases, abnormal breathing and difficulty breathing.3 Patients with methanol poisoning may also experience dizziness, headache, and in severe cases, blindness and visual impairment. This is a clinical manifestation of methanol poisoning.