The etiology of esophageal foreign bodies is simple, and most of the diseases occur due to the patients’ mis-swallowing, and the specific causes are different according to the affected population, and the performance mainly includes the following: the main causes of esophageal foreign bodies in children are: 1, children often put toys, pen caps, coins and other items into their mouths and swallow them or swallow them by mistake while playing because of curiosity; 2, children mistakenly eat bones, fish spines or date kernels and other foods due to their underdeveloped swallowing function, resulting in esophageal Foreign body; 3, children’s teeth are not fully developed, resulting in food can not be fully chewed, swallowed, resulting in esophageal foreign body. The main causes of esophageal foreign bodies in adults are: 1. diseases in the esophagus itself, such as esophageal stricture, esophageal cancer, spasm and other diseases, which can cause obstruction of swallowing; 2. carelessness or inattention when eating, resulting in food being swallowed without careful chewing or fish spines, bones, etc. being accidentally swallowed into the esophagus. The main causes of foreign bodies in the esophagus of the elderly are: 1. teeth falling out or dentures being swallowed after falling out; 2. deterioration of swallowing function, resulting in reduced sensitivity in the oral cavity or accidental ingestion of fish spines, etc. In addition, delirium, mental illness and those with suicide attempts, such patients forcibly swallow various items with subjective intent.