For patients with atrophic gastritis, selenium supplementation can be used to improve the digestive and absorptive functions of the gastrointestinal tract, and selenium yeast tablets are commonly used in the clinic, and its selenium supplementation is more effective. Selenium yeast tablets, which contain high levels of selenium, are mainly used to promote digestion and absorption in the gastrointestinal tract, because selenium is the main component of glutathione peroxidase, glutathione peroxidase, which can significantly improve digestion and absorption in the gastrointestinal tract, and also help to alleviate the symptoms of abdominal pain, bloating, constipation, and so on. However, the use of selenium yeast tablets needs to be under the guidance of a doctor, a large amount of selenium supplementation may cause dizziness, headache and so on. Patients with atrophic gastritis should not rely only on selenium supplementation, but also need to follow the doctor’s instructions, together with other medications, as well as pay attention to diet and lifestyle habits, in order to facilitate the recovery of atrophic gastritis.