Barium meal can check esophageal malformation, inflammation of digestive tract, ulcer and tumor. Barium meal is mainly used to diagnose diseases of the digestive system, which is a non-invasive examination method, and the examination process will not invade the patient’s digestive system mucosa, so it is suitable for a wide range of people. When the patient is examined, the barium meal is taken on an empty stomach, and then the condition of the barium meal entering the digestive system is observed under the X-ray. When there is inflammation and ulcers on the mucous membrane of the digestive system, it can also be fully revealed, and the area of the ulcers can be initially judged. Some people have tumor diseases in the digestive system, and barium esophagus meal can detect the location and size of the tumor, which is useful for preliminary diagnosis of stomach cancer.