Punctures for benign breast nodules do not cause cancer. A puncture of a breast nodule is an important test that can help the patient to clarify the nature of the nodule and help to diagnose breast diseases so that the patient can be treated properly. Puncture of benign breast nodules may lead to bleeding, infection and other complications, but it will not lead to breast cancer because of this operation. The transformation of benign breast nodules into malignant breast cancer may be related to factors such as heredity, endocrine disorders, environmental factors and lifestyles. Patients who are examined for benign breast nodules should go to the hospital in time, follow the doctor’s treatment plan, and go to the hospital for regular checkups and follow-ups to detect changes in the breast nodules in time and treat the breast nodules as early as possible.