Before the barium esophageal meal test, you need to ensure fasting, avoid taking drugs containing metal ions, and avoid wearing metal jewelry. 1. Ensure fasting: Failure to ensure fasting will result in inaccurate test results or even inability to perform barium meal test. 3 days before the examination, you should eat light and easy to digest food, such as porridge, noodles, tofu, etc., and forbid fiber food. You should not eat or drink for 12 hours before the examination. 2. Avoid taking medicines containing metal ions, such as calcium tablets, bismuth, etc., 1 day before the examination, which may affect the examination results and lead to leakage and misdiagnosis. 3. Avoid wearing metal ornaments: you should choose loose clothing and avoid clothing with metal zippers and metal buttons to avoid affecting the examination. In addition, the test usually takes a certain amount of time and may need to be done more than once to ensure the accuracy of the test results, so you should cooperate actively.