Bile reflux gastritis is caused by factors such as abnormalities in the pyloric sphincter, gastric surgery, and gastrointestinal motility disorders, leading to the reflux of pancreatic juices, bile, and other contents from the duodenum, which causes damage to the gastric mucosa and leads to chronic gastritis. Its treatment primarily includes two aspects: medication and lifestyle adjustments. If the patient is infected with Helicobacter pylori, treatment with medication should first aim to eradicate Helicobacter pylori. Additionally, drugs that enhance gastrointestinal motility, gastric mucosal protectants, bile acid drugs, and acid-suppressing drugs can be used to treat bile reflux gastritis. Apart from medication, diet is also crucial. It is important to minimize consumption of unhealthy foods, diversify one's diet, focus on foods high in vitamins, avoid prolonged and excessive alcohol consumption and smoking, maintain a positive mood, and ensure adequate sleep.