In clinical practice, the steps of breast puncture include the following aspects: 1. Before breast puncture, it is necessary to accurately locate the puncture site of the patient’s breast, so as to improve the correct rate of breast puncture. 2. The patient should take the lying position, and then sterilize the patient’s breast, paying attention to the scope of disinfection must be greater than 15cm, so as to maintain the aseptic state, and the whole operation must strictly follow the aseptic operation. 3. After disinfection, the patient should be covered with a sterile towel, and then local anesthesia should be performed. After anesthesia is completed, the puncture needle should be aligned with the puncture point of the patient’s breast, and then puncture the patient’s breast puncture site quickly and rapidly, paying attention to the movement must be gentle, and avoiding collateral damage. In addition, after the success of breast puncture, the puncture needle must be pulled out quickly, the breast puncture point and pressure to stop bleeding, with a bandage for pressure bandage, and then the pathology of the patient’s breast puncture to do the examination of the breast puncture, breast puncture is considered a success.