People who suffer from gastric perforation may develop stomach cancer if they are not treated thoroughly. Gastric perforation can be caused by gastritis and gastric ulcer. Gastric perforation may not necessarily cause stomach cancer, but prolonged existence of gastric perforation or gradual enlargement of its area will lead to excessive secretion of gastric acid, which will cause great stimulation and repeated damages to the stomach, thus inducing the occurrence of stomach cancer. After suffering from gastric perforation, it will easily lead to severe abdominal pain, which is like cutting or burning pain and lasts for a long time. Gastric perforation can be treated by perforation suture surgery, and patients with serious condition need to undergo partial gastrectomy. After the operation, gastritis, gastric ulcer and other diseases need to be treated accordingly to prevent recurrence of gastric perforation. After gastric perforation, it is recommended to actively cooperate with doctors for treatment to prevent cancerous changes.