Barium meal and gastroscopy have their own advantages, and patients with different conditions should adopt the appropriate examination method. Barium meal test is to let the human body swallow the barium before the examination, and then determine the lesions in the esophagus and stomach through X-ray, the advantage of this test is that the human body has a high degree of tolerance, and it is suitable for patients with cardiovascular and cerebrovascular diseases. However, the barium meal test is not able to visually determine whether there are lesions in the patient’s esophagus and stomach, so the accuracy is poor. Gastroscopy is mainly to use gastroscopy equipment to see whether there are lesions in the gastric mucosa and esophagus of the patient, which has a higher degree of intuition, and at the same time, it can be biopsied or treated under the endoscopy. However, patients with underlying diseases may not be able to tolerate gastroscopy. It is important to fast for 8 hours before having a barium meal or gastroscopy, as prescribed by your doctor.