Submucosal esophageal bulge is a morphological change, and common causes include submucosal esophageal lesions, extraesophageal lesions, etc. Reasonable treatment should be given according to specific causes, such as drugs, dietary therapy, surgery, etc., to improve the symptom of submucosal esophageal bulge. Common causes and treatments: 1. Submucosal esophageal lesions: Patients with submucosal esophageal lesions, such as smooth muscle tumors, lipomas, hemangiomas and cysts, can lead to submucosal esophageal bulging. Patients should go to the hospital in time and can do gastroscopy to clarify the size, location and growth depth of the lesion. Generally, benign tumors such as fibroids or smooth muscle tumors are more common, and submucosal mass stripping is feasible under gastroscopy, and pathological tissue biopsy is done after surgery. Patients should pay attention to rest, avoid strenuous exercise, and avoid eating foods with high fiber content, such as coarse grains and bran, during the recovery period to prevent wound infection. And regular review of gastroscopy; 2. Extra-esophageal lesions: Patients with extra-esophageal lesions, such as enlarged mediastinal lymph nodes and mediastinal tumors, can lead to extra-esophageal compressive changes, which then cause submucosal bulging of the esophagus. Patients should promptly undergo relevant examinations, such as chest CT, MRI, etc. If it is caused by tumor, the source of the tumor should be investigated to clarify whether it is a primary tumor or metastatic tumor, and treatment plan should be formulated according to the examination results. If it is a primary tumor, surgical resection is feasible, and if it is a metastatic tumor, chemotherapy, radiotherapy or surgery should be chosen according to the condition. Patients should pay attention to supplemental nutrition, strengthen exercise and enhance their immunity to help promote recovery. With the appearance of submucosal bulge in esophagus, attention should be paid to dietary regulation. A liquid or semi-liquid diet can be consumed, avoiding spicy, stimulating and hard food, which is not conducive to local care.