Aspirin is a drug commonly used clinically to reduce platelet aggregation, to avoid thrombosis and to reduce blood viscosity. Patients taking aspirin are evaluated for discontinuation based on specific surgical sites, modalities and patient-specific conditions: 1. If a patient needs surgical removal for superficial benign masses, such as lipomas, epidermoid cysts and hemangiomas. Patients may not need to discontinue aspirin, and the post-surgical wound can be pressurized to achieve a better hemostatic effect without causing local bleeding or hematoma formation. 2. If patients need to undergo surgical treatment for neoplastic lesions of the digestive tract, such as malignant tumors of the stomach or liver, they may need to discontinue aspirin before surgery. Patients need to stop using aspirin for at least 7 days before surgery in order to avoid complications such as postoperative trauma bleeding. If the patient has previous underlying diseases such as atrial fibrillation, subcutaneous low-molecular heparin replacement therapy needs to be given to prevent thrombosis during aspirin discontinuation.