BACKGROUND: Peptic ulcers are a common gastrointestinal disease that could cause death when combined with bleeding. The aim of this study was to identify risk factors for peptic ulcer bleeding (PUB) recurrence after the initial episode. METHODS: This retrospective study analyzed medical records of PUB patients who were admitted through the emergency department between January 1, 2020, and December 31, 2022. A multivariate logistic regression model was used to identify independent risk factors predicting readmission due to recurrent PUB within one year. RESULTS: A total of 775 PUB inpatient samples were collected, among which 172 and 603 were placed respectively in the readmission group and non-readmission group. Multivariate analysis indicated that PUB inpatients who were aged 70 or above (OR = 1.62, 95% CI: 1.06-2.47), had more severe ulcers (Forrest 1a, 1b, 2a, or 2b) (OR = 2.41, 95% CI:1.57-3.71), had a CCI score of 3 or higher (OR = 2.25, 95% CI:1.45-3.50), had a medical history of peptic ulcers (OR = 3.87, 95% CI:2.56-5.85), had a medical history of cardiovascular disease (CVD) (OR = 2.31, 95% CI:1.53-3.50), or had an international normalized ratio (INR) > 1.2 on admission (OR = 2.14, 95% CI:1.28-3.57) were respectively more likely to be readmitted within a year due to PUB than those who were under the age of 70, had less severe ulcers (Forrest 2c or 3), had a CCI score of less than 3, had no medical history of peptic ulcers, had no medical history of CVD, or had admission INR ≤ 1.2. CONCLUSION: This study confirmed that age (≥70 years), Forest classification (Forrest 1a, 1b, 2a, or 2b), multiple comorbidities, a medical history of peptic ulcers, a medical history of CVD, and admission INR > 1.2 were independent risk factors for patient readmission within a year due to recurrent PUB.