Gastric perforation is a sudden disease, usually without precursors, and some patients may present with discomfort such as gastric distention and stomach pain. Many diseases have no precursors before the onset, and gastric perforation, which is a sudden disease, also has no precursors. Only some patients may have discomfort such as gastric distension and stomach pain. If it is a gastric ulcer that causes gastric perforation, this condition should usually have stomach discomfort, and you need to go to the hospital to check the gastroscope to be able to find out, if you do usually have gastric ulcer patients, you should pay attention to the diet, this type of gastric ulcer patients, before the perforation should be possible to have symptoms. It may manifest itself as symptoms such as stomach pain, nausea and vomiting. Like those blunt force injuries, these are temporary conditions without precursors. Of course, the symptoms of perforation in patients with gastric cancer should be similar to those of perforation in patients with gastric ulcer, and the main manifestation of perforation in postoperative patients should be abdominal pain. Not all diseases have precursors, such as this acute disease is unpredictable, and there is no precursor. Therefore, it is necessary to develop a good living habit and a regular medical checkup so as to detect the disease as early as possible to avoid delaying the disease.