The needle that is tied to the vein at the superficial part of the body is very good to pull out, the tape used to fix the needle on both sides is gently torn away and then pulled out quickly in the direction of the needle, the operation should be gentle, after pulling out the switch of the infusion tube is quickly closed, and then the needle hole is pressed with cotton swabs and cotton and gently pressed for about 3-5 minutes so as not to cause bleeding under the skin. In addition, a slight painful sensation will occur when the needle is removed, which is normal because penetrating the vein will cause some local damage to the vessel wall, which can be warmed up with eggs and hot towels after stopping the bleeding. If it is an arterial puncture, or a deep vein such as a central subclavian vein or arteriovenous vein, it is recommended to go to the hospital and let the nurse perform the extraction.