For gastric ulcer, hospitalization is basically not required, but mainly oral medication is given on an outpatient basis, and hospitalization is given only when complications of gastric ulcer occur and the hospitalization criteria are met. The duration of hospitalization for gastric ulcers is about 7 days, and for more serious complications, it may take 7-14 days, depending on the specific condition. The more common complications of gastric ulcers are bleeding, perforation, and cancer. In the case of ulcers in the pyloric duct, there is a possibility of obstruction, which also requires hospitalization. In case of complications of gastric ulcer, if the conservative treatment in medical hospital fails, it may be necessary to transfer to surgical treatment, which also takes about 14 days in surgery. In short, gastric ulcer does not require hospitalization, but if the criteria for hospitalization are met, the time given for hospitalization is about 7-14 days.