Introduction Corrosive esophagogastroduodenitis is caustic damage due to ingestion of chemical agents and is a serious medical and social issue, with eighty percent of corrosive injuries occurring in children. Corrosive substances, also described as caustic substances, consist of alkali and acidic agents. Acetic acid (C2H4O2) is a caustic that has acidic properties and widely used in Indonesia as a stimulation of sap production as a form of wood vinegar that used as a stimulant to increase pine sap flow.   Case A 15-year-old girl came to the emergency department with profuse nausea and vomiting after ingestion of acetic acid 3 days ago. She vomited more than 3 times a day, the contents were yellowish liquid without blood. Afterward, the patient felt burning pain in her mouth and throat. She progressively had trouble eating and drinking because of pain and difficulty swallowing. Gastroscopy examination showed erythema ulcer and erosion on the lingual, hypopharynx, esophagus, gaster and duodenum. Patient was diagnosed with dysphagia and odynophagia due to corrosive agent + Esophagoduodenitis and then was treated with Nasogastric tube (NGT), Kaen 3b, Paracetamol injection as analgetic, Dexamethasone injection, Omeprazole injection, Rebamipide, Sucralfate, Nystatin, Diet 50-100 cc/ 3 hour orally via NGT.   Conclusion The ingestion of acetic acid remains widespread in many developing countries. Individuals who consume acetic acid may be asymptomatic or display a variety of initial signs and symptoms. Endoscopy is acknowledged as the gold standard for evaluating both the location and severity of injuries caused by corrosive substances.