The invention discloses a kind of sealing blood-taking device for medical blood count, including blood sampling head, storage blood device and output mechanism, described storage blood device includes Chu Xuecang, the storage blood import for being arranged on storage blood orlop portion, the extraction piston being arranged on inside storage blood storehouse and insurance draw ring;Described storage blood storehouse upper portion side wall is provided with external screw thread;Described extraction piston includes the rubber piston for being arranged on bottom and being mutually adapted with Chu Xuecang inner chamber, the piston rod being connected with rubber piston top and the rotary sleeve with being arranged on storage blood storehouse top and being mutually threadedly coupled with storage blood storehouse, has through hole in the middle part of described rotary sleeve;Described piston rod is through the through hole and piston rod part is with the spacing ring seat mutually abutted with rotary sleeve end face;Described storage blood, which enters, intraoral is provided with check valve.A kind of sealing blood-taking device for medical blood count of the present invention, its is rational in infrastructure, easy to use, good sealing effect, and can antidrip, Antipricking.
