The normal value of Helicobacter pylori is 0~110dpm, and Helicobacter pylori will be infected when it is 270dpm, which can be transmitted within the family, family meals and friends’ meals. 1. Intra-family transmission: If H. pylori is infected during childhood, it is usually caused by the bad feeding habits of mothers and children, such as mothers will sometimes chew the food and then feed it to the children, which will easily infect the children with H. pylori. 2. Family dinners: family dinners at the same time, living, eating, eating together, easy to get infected with Helicobacter pylori. 3. Friends get-togethers: If friends are infected with H. pylori and often eat together, the pathogenic bacteria will enter the esophagus, stomach and other tissues of the digestive system through the oral cavity, thus causing infection. If you are infected with H. pylori, it is recommended that you seek medical attention in a timely manner and under the guidance of your doctor to avoid spreading the infection to your family or friends.