Esophageal intramural hematoma is a rare form of acute esophageal injuries. We describe a case of esophageal intramural hematoma initially appearing as a longitudinal submucosal bulge at upper endoscopy. Thoracic computed tomography and esophagogram were performed for confirming the diagnosis. Endoscopic Biopsy was performed for the suspected esophageal tumor. The patient's symptoms resolved after biopsy and she resumed eating two days after admission. Endoscopy 7 days later showed a longitudinal esophageal ulcer and disappearance of the bulging mass. We suggest that early endoscopic intervention may improve life quality and shorten hospital stay.