The 30-year-old frequent belching may be related to the existence of gastritis, pyloric stenosis and other reasons, it is recommended to pay attention to the timely. 1. Gastritis: Gastritis is a common gastrointestinal disease, which can weaken the digestive function of the body, and also lead to excessive secretion of gastric acid, which produces a large amount of gas in the process of contact between the food and gastric acid, resulting in the symptom of warm air. 2. Pyloric stenosis: After the food enters the body, it needs to enter the duodenum through the pylorus, if the pyloric stenosis, the food will be stored for a long time, and then there is a long period of time stagnation, the occurrence of warm air. 30-year-old frequent belching may also have other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause, give targeted treatment or treatment.