Having a stained gastroscopy does not indicate seriousness. Dyeing gastroscopy generally refers to the spraying of dye on the mucosal surface of the digestive tract through the gastroscope, so that the lesion mucosa and normal mucosa to enhance the contrast, thus making the lesion area clear, is a commonly used means of examination in hospitals, generally can be further observed on the basis of ordinary gastroscopy of the mucosal lesions, that is, to play the role of auxiliary does not have a very serious. Compound iodine solution for esophageal mucosal squamous epithelial staining, the tumor area is not stained, and the normal epithelium of dark brown staining to form a clear contrast. Do staining gastroscopy may be due to chronic atrophic gastritis, gastroenteritis and other causes, patients can use omeprazole, aluminum phosphate gel and other drugs under the guidance of the doctor to carry out treatment, chronic renal failure patients and hyperphosphatemia disable this drug, need to be based on the patient’s own situation for treatment. Patients with symptoms of discomfort should go to the hospital in time for examination and treatment under the guidance of the doctor.