There are many causes of gastric cancer. Many people know that it is related to diet, bad living habits and genetic factors. In fact, Helicobacter pylori infection is also a very important factor. Helicobacter pylori can cause gastritis, gastric ulcer, gastric cancer and other diseases. Therefore, the prevention and eradication of Helicobacter pylori infection is an important link in the prevention of gastric cancer. Helicobacter pylori infection is a spiral and mild anaerobic bacteria, which requires strict growth conditions. It has been recognized by scholars all over the world that Helicobacter pylori infection is acquired. The mode of transmission is not very clear, but the most likely mode is mouth-to-mouth and feces-to-mouth transmission. Helicobacter pylori is parasitic in gastric mucosa, and the infection rate of Helicobacter pylori in the population is about 40%, which is a common bacterial infection. The key to prevent Helicobacter pylori infection is to control the disease from the mouth. Wash your hands before and after meals, and pay attention to hygiene when eating, especially eating cold food. It is a wise choice to share meals when eating in groups. When there are patients with Helicobacter pylori at home, they should eat alone for the time being until they are completely cured. It is recommended to use public chopsticks and spoons when eating. For people with digestive tract symptoms, such as those who often feel stomachache, bloating, stomach discomfort and frequent burps, Helicobacter pylori should also be tested as soon as possible. If the stomach is infected with Helicobacter pylori, patients usually have the following symptoms: ● Pantothenic acid-Helicobacter pylori can induce a large amount of gastrin secretion, leading to hyperacidity, which is manifested as pantothenic acid and heartburn; ● Abdominal pain-Some patients may have symptoms such as repeated severe abdominal pain and a small amount of bleeding in the upper digestive tract due to gastric and duodenal mucosal injury; ● Abdominal distension, discomfort or pain after eating, often accompanied by other adverse symptoms, such as fever, abdominal distension, acid reflux, loss of appetite, etc. Generally, people infected with Helicobacter pylori need regular examination to prevent the occurrence of gastric cancer, such as gastroscopy, upper gastrointestinal radiography, PET-CT and so on. Stomach cancer fever: attention!