Endoscopic resection of pedunculated polyps mainly focuses on how to prevent bleeding, and also needs to pay attention to the convenience of resection and the integrity of resection, which means that different endoscopic resection strategies should be adopted for pedunculated polyps with different stalk sizes. Small pedunculated polyps with heads smaller than 20mm and stalks less than or equal to 5mm are defined as having a relatively small risk of bleeding. Preliminary studies in recent years suggest that the use of cold snare polypectomy for small pedunculated polyps may also be a safe resection strategy. However, for small pedunculated polyps, ASGE and ESGE guidelines currently recommend hot snare polypectomy in the middle and lower pedicles (evidence level medium). Therefore, the provision of high-quality clinical evidence related to cold resection techniques in the resection strategy of small pedunculated polyps may provide a basis for revision of guidelines.

Inclusion Criteria:

• 1. Patients undergoing endoscopic resection of small pedicled polyps in the First Affiliated Hospital of Ningbo University, The Third People's Hospital Health Care Group of Cixi, Ninghai Second Hospital and Renmin Hospital of Yuyao City from October 2023 to August 2026; 2. Patients who voluntarily agreed to participate in this study and signed informed consent.

Exclusion Criteria:

• 1. Persons under 18 years of age 2. Persons unwilling or unable to provide informed consent 3. Treatment or radiotherapy for malignant diseases, severe chronic heart or lung diseases, coronary or cerebrovascular events requiring hospitalization within the last 3 months 4.polyps with endoscopic features suspicious for carcinoma 5. Abdominal symptoms such as severe abdominal pain, abdominal distension, and nausea 6.Patients with inadequate intestinal preparation 7. Patients with lifelong anticoagulant therapy or severe bleeding diseases, patients who have recently taken anticoagulant drugs or antiplatelet drugs (within 1 week) 8.Pregnant or lactating