Blood sample mixing device

The utility model relates to a blood sample mixing device which effectively solves the problems that time and labor are wasted and the mixing effect is poor when blood is mixed uniformly. Comprising a shell, a left-right axial rotating column is rotationally connected to the shell, a spiral groove with an outward opening is formed in the rotating column, a U-shaped block with a downward opening and capable of sliding left and right is arranged in the shell, a sliding column inserted into the spiral groove is arranged at the upper end of the U-shaped block, and a rectangular groove with a leftward opening is formed in the rotating column; a plurality of connecting blocks evenly distributed in the left-right direction are arranged on the left side and the right side of the rotating column respectively, sleeves which are in the vertical axial direction and provided with upward openings are arranged at the front ends of the connecting blocks, inserting blocks with the rear ends inserted into the rectangular groov