Hiccups after pregnancy are related to the following factors: First, hiccups can occur during pregnancy due to increased hormone levels in the body, stimulation of the gastrointestinal tract, rapid digestion of food, and gas residue in the stomach cavity. Secondly, hiccups may also be a symptom caused by diaphragm spasm, and may also be caused by eating too quickly, while other diseases cannot be completely ruled out, such as gastritis, gastric ulcer, duodenal ulcer and many other diseases, which may also cause hiccups, and it is recommended to go to the hospital for treatment in time. Thirdly, it may also be due to the fact that the uterus gradually increases in size in the later stages of pregnancy, which produces pressure on the abdominal cavity, resulting in various situations such as hiccups and constipation.