GERD symptoms are easily confused with many other diseases, and patients often do not realize they have the disease, or if they do, they do not pay enough attention to it due to lack of knowledge about it. The dangers of GERD include reducing the patient’s quality of life, causing various complications, and even cancer and death. The various symptoms of GERD, which can recur, cause long-term distress in patients’ lives, and are often more pronounced at night, affecting sleep and annoying people, while the psychological and mental state worsened by the disease can aggravate the disease, causing a vicious circle. GERD, if left untreated, can bring complications such as asthma, aspiration pneumonia, pulmonary fibrosis, otitis media, esophageal stricture, etc., causing more pain and worse quality of life for patients. Many GERD are caused by esophageal hiatal hernia. Severe hiatal hernia may lead to necrosis and perforation of the stomach if not operated, resulting in extremely serious consequences. In GERD, gastric acid and bile repeatedly irritate the esophageal mucosa, leading to its erosion and ulceration, which, over time, can lead to the development of esophageal cancer. When the refluxed gastric acid enters the trachea, it can cause severe respiratory reactions and may even lead to laryngospasm and death of the patient.