Stomach acid reflux hiccups all the time are usually caused by indigestion, improper diet, reflux esophagitis, and gastric ulcers. First, food entering the stomach needs to be corroded by digestive juices before it can be broken down and then expelled into the duodenum. Once indigestion occurs, the digestion of food will be affected and the emptying time will be relatively longer. Patients with dyspepsia not only experience bloating in the stomach, but also acid reflux in the stomach. Overdistension of the stomach can also cause irritation of the diaphragm, and some people may experience hiccups as a result. Secondly, eating foods that are too acidic, too spicy or too sweet can stimulate excessive secretion of gastric acid, which can lead to acid reflux. When acid reflux occurs in the stomach, it affects the peristaltic function of the stomach and also causes irritation to the surrounding organs, causing hiccups. Again, acid reflux can cause reflux esophagitis when it violates the mucosa of the esophagus, which can be accompanied by acid reflux, belching, burning and pain, and in some cases, hiccups. Finally, when there is a gastric ulcer in the stomach, it is more likely to be invaded by gastric acid, especially when the gastric acid touches the ulcer surface, which causes spasmodic contraction of the stomach wall, and even stimulates the diaphragm through the gastric diaphragm ligament, and the diaphragm will spasm and contract when stimulated, resulting in hiccups.