When a baby swallows a penny, the coin is usually not very large and can usually be expelled through the anus. Therefore, after a small child swallows a coin, the first thing to do is to observe whether there is any abdominal pain or nausea, vomiting and other uncomfortable symptoms. If there are no such symptoms, laxative treatment is usually sufficient. First of all, small children mainly eat fruits that are easy to laxative, such as dragon fruit, bananas, can also take honey laxative treatment, generally in about 2-3 days can be discharged on their own. But if after 2-3 days it has not been excreted, you must pay attention to whether the coin stays in a certain place for a long time, thus stimulating the mucous membrane of the gastrointestinal tract and leading to its inflammation. Usually, if it is an inflammation of the intestinal tract, symptoms such as abdominal pain or diarrhea, nausea and vomiting will occur. If this symptom occurs, you must go to the hospital for formal examination and treatment, and if necessary, remove it by colonoscopy or gastroscopy, or even open surgery.