The ESD procedure is an endoscopic submucosal dissection, which usually eliminates the need for further surgery and may require surgical intervention if the tumor cells are not removed cleanly. Endoscopic submucosal dissection is indicated for early-stage cancers, precancerous lesions in the digestive tract, large flat polyps, and submucosal tumors, and this procedure has the advantage of being less invasive and thorough. However, when used to treat early-stage cancers, if the lesion cannot be completely removed by this procedure, another endoscopic submucosal dissection or surgical procedure will be required. After endoscopic submucosal dissection, patients should strictly fast according to the doctor’s instructions. After fasting, patients should first consume fluids, and with the recovery of the disease, patients can gradually consume semi-liquid food. Pay attention to the temperature when eating to avoid overheating, which may cause damage to the surgical site. When performing endoscopic submucosal dissection, you should choose a regular hospital, and you should consult a doctor in time for treatment of any adverse symptoms after the operation.