PICC puncture needle

The utility model discloses a PICC (Peripherally Inserted Central Catheter) puncture needle and relates to the field of nursing materials. The utility model provides the PICC puncture needle with the function of assisting blood return through suction. The PICC puncture needle comprises a needle core and a cannula sheath, the cannula sheath sleeves the needle core, the aspirator comprises an aspiration barrel, a piston, a piston rod and an operation button, the aspiration barrel is connected with the rear end of the needle core, a long hole axially formed along the aspiration barrel is formed in the rear of the aspiration barrel, the piston is positioned in the aspiration barrel and matched with the aspiration barrel, the piston is positioned in front of the long hole, and the piston rod is positioned in front of the long hole. The piston rod is connected with the piston, the operating button comprises an operating part and a connecting part, the operating part is attached to the suction cylinder, and the conn