Gastric antrum bulge size 0.8 cm, smooth surface can be seen in gastric polyps, gastric sinusitis and other gastric diseases, it is recommended that according to the type of disease for conservative treatment or surgical treatment. 1. Gastric polyp: If the patient does not have obvious clinical symptoms during the onset of the disease, or occasional heartburn, acid reflux, vomiting, loss of appetite and other clinical manifestations, the above phenomenon can be considered related to gastric polyps. Conservative treatment can be carried out through the use of acid inhibitors such as omeprazole, antibiotic drugs such as amoxicillin capsules, pectin bismuth and other gastric mucosa protectants and other drugs. If the volume of gastric polyps gradually increases with the development of the disease, it is recommended to be treated by gastroscopic polypectomy and other surgical methods. 2. Gastric sinusitis: Gastric sinusitis is an inflammatory disease caused by gastric acid or Helicobacter pylori infection that erodes the mucosa of the gastric sinus. During the onset of the disease, patients may repeatedly appear stomach acid, abdominal pain, abdominal distension, decreased appetite, vomiting, belching and other clinical manifestations. Conservative treatment with proton pump inhibitors such as rabeprazole, gastric mucosal protectors such as bismuth potassium citrate, and antibiotics such as clarithromycin capsules is recommended. Gastric sinus bulge size 0.8 cm, smooth surface can also be seen in other gastric diseases, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor for targeted treatment.