Benign esophageal tumor is one of the esophageal tumors, but its cases are rare, accounting for only 1% of esophageal tumors, among which the most common is smooth muscle tumor, accounting for about 90%. Esophageal smooth muscle tumors are most commonly seen in middle-aged men. Smooth muscle tumors are mostly located in the lower and middle segments of the esophagus, and most of them are solitary. Smooth muscle tumors originate from the muscle layer of the esophageal wall and grow slowly into and out of the lumen of the esophagus, while the mucosa remains intact and thus does not cause vomiting of blood. The tumor is round, oval or horseshoe-shaped, with an intact envelope, tough, grayish-white, swirling structure, 2-5 cm in diameter, but sometimes up to 10 cm or more, and encircling long segments of the esophagus. Characteristics Esophageal smooth muscle tumor may not present clinical symptoms for a long time, but is discovered accidentally during barium meal X-ray examination of the gastrointestinal tract; when the smooth muscle tumor grows up, it usually exceeds 5 cm, and may present post-sternal fullness, painful pressure and mild swallowing obstruction. Barium esophagogram X-ray examination can show smooth and neat round or oval filling defect with sharp angle at the junction of its upper and lower edges with normal esophageal wall, and the esophageal mucosal folds in the tumor area are flattened by the tumor and disappear but not destroyed. Treatment measures: Esophageal smooth muscle tumors that are clinically asymptomatic and small in size can be followed up and observed regularly, and there is no need to perform surgery urgently. If the tumor is large and clinically symptomatic, or if the tumor is asymptomatic but causes anxiety and anxiety, esophageal smooth muscle tumor removal is recommended. After entering the chest through the right or left thoracic incision, the mediastinal pleura is incised and the esophagus is exposed, and the smooth muscle tumor can be removed outside the mucosa by longitudinal incision of the muscular layer. If the mucosa is broken during the operation, interrupted internal sutures are needed, and then the muscle layer is sutured and covered with mediastinal pleura. In cases of huge smooth muscle tumors encircling the esophagus, partial esophagectomy and esophagogastric anastomosis are required.