Normal values for H. pylori DPM are related to the breath test chosen, with normal values of 0-4 dpm for the carbon 13 breath test and 0-100 dpm for the carbon 14 breath test. Helicobacter pylori is a bacterium that parasitizes the gastric sinus and pylorus and damages the gastric mucosa, and is classified as a class I carcinogen. It can be transmitted through the oral-oral route and fecal-oral route. The presence of H. pylori infection is considered when the test result is higher than normal. It can be treated with quadruple therapy, a combination of two antibiotics such as amoxicillin and metronidazole + a bismuth agent such as bismuth potassium citrate + a proton pump inhibitor such as omeprazole. The choice and dosage of specific drugs is recommended to consult a gastroenterologist and use as prescribed. Since the medication contains antibiotics, it is important to maintain a sensible diet during the medication period, avoiding alcohol as well as spicy and stimulating foods that may cause adverse reactions. Patients should emphasize meal sharing with family members in daily life, avoid sharing tableware and strengthen disinfection so as not to cause cross infection among family members and friends. In daily life, advocate the use of communal chopsticks during meals and pay attention to dietary hygiene.