Long-term hiccups may be due to poor dietary habits, subdiaphragmatic infections, Helicobacter pylori infections, gastroesophageal reflux disease and other reasons. 1. Poor dietary habits: Often eat too much during meals, often eat gas-producing foods, often drink carbonated beverages, and like to talk during meals can lead to hiccups. 2. Subdiaphragmatic infection: Infection can stimulate the diaphragm to cause diaphragmatic spasm and repeated hiccups. 3. Helicobacter pylori infection: Helicobacter pylori is the cause of many gastric diseases, and also has a certain gas-producing ability, which can cause long-term hiccups, and may cause gastric ulcer, duodenum and other digestive diseases. 4. Gastroesophageal reflux disease (GERD): Refluxed gastric contents can burn the esophagus, causing hiccups, heartburn and other symptoms. There may be other reasons for long-term hiccups, and you can go to the hospital for examination to clarify.