Hiccup is caused by diaphragm spasm and contraction, which is a normal physiological phenomenon and related to diet.

Suggestion:

It's related to emotions. When burping, you can press Shaoshang point, and the pain will be improved. If this is the case for a long time, you should go to the hospital for examination in time, and it is not excluded that it is related to gastrointestinal and hepatobiliary problems.