A lead puncture needle includes a core rod, a puncture needle, a lead mechanism and a handle. A front end of the core rod includes a blunt head and a lead slot. During puncture, the puncture needle is exposed. After the puncture, the blunt head protrudes out of the puncture needle to avoid injury to normal tissue. When a button is pressed, the core rod moves downward, and the lead slot protrudes from the puncture needle. When the button is pressed again, the core rod moves upward, and the lead slot is retracted into the puncture needle to form traction on a surgical suture. The design of the blunt head ensures that it is retracted during puncture to expose the puncture needle to facilitate puncture and the blunt head is controlled to be exposed outside the puncture needle in a separation process, thereby avoiding accidental injury to the surrounding tissue.
