Arterial hemostix capable of preventing needle stick injury and leakage

The invention discloses an arterial hemostix capable of preventing needle stick injury and leakage. Comprising a blood sampling aspirator, a blood sampling needle head and a needle-stick-injury-preventing/leakage-preventing sleeve. The blood sampling needle head is connected to the front end of the blood sampling aspirator; the needle-pricking-injury-preventing/leakage-preventing sleeve is sleeved outside the blood sampling aspirator in a front-back sliding manner, and a disc-shaped sealing cotton block for covering and sealing the front end of the blood sampling aspirator is fixedly adhered to an opening in the front end of the needle-pricking-injury-preventing/leakage-preventing sleeve; the blood sampling needle head penetrates through the disc-shaped sealing cotton block, and the front end of the blood sampling needle head forwards extends out of the front side of the disc-shaped sealing cotton block; when the anti-pricking wound/leakage-proof sleeve slides forwards to enable the disc-shaped sealing cotton