Egg shells for gastric ulcers belong to the treatment method of traditional Chinese medicine (TCM). Because the main component of egg shells is calcium carbonate, which can play a role in neutralizing gastric acid and also protect the gastric mucosa and astringent ulcer wounds, TCM practitioners will powder egg shells and then use them for oral treatment of gastric ulcers. However, according to guidelines and clinical experience, the drugs of choice for gastric ulcers are western drugs that inhibit gastric acid secretion, including H2 receptor antagonists and proton pump inhibitors. Among them, the strongest effect of acid inhibition is proton pump inhibitors, and also need to be combined with bismuth, which can play a role in protecting the gastric mucosa and promoting mucosal repair. For patients with gastric ulcer, it is also necessary to clarify whether it is caused by H. pylori infection, and if so, regular H. pylori eradication treatment needs to be given in order to play a role in completely curing the ulcer.