Requirements before the H. pylori test include patient fasting, stopping medication, and not talking too much. 1. Fasting: keep fasting 6~8 hours before the test, otherwise it may interfere with the result of breath test. 2. Discontinue medication: one month before the test, you need to stop using medication related to anti-Helicobacter pylori infection as prescribed by your doctor, and you should not take antibiotics, such as amoxicillin capsules and metronidazole capsules, which can easily lead to false-negative test results. 3. Do not talk too much: choose to do the breath test, it is recommended that patients do not take pills after excessive activity, loud noise, phone calls, etc., because the H. pylori test breath test is collected in the carbon dioxide gas, if too much walking or talking, it may lead to the exhaled carbon dioxide exhaled in the air, the collection of which will be reduced, will affect the test results. If a patient’s examination reveals the presence of H. pylori infection, it is recommended that timely treatment be carried out under the guidance of a doctor.