Reagent mixing device

The invention discloses a reagent mixing device. The reagent mixing device comprises a base, wherein the top part of the base is provided with a placement groove. The reagent mixing device provided bythe invention has simple structure; a motor drives a first gear through a first rotating shaft, and the first gear is engaged with a second gear, so a third rotating shaft is driven to rotate; the third rotating shaft drives a cam to rotate, and the cam squeezes a rotating rod to rotate, so a gear rack is engaged with a third gear; meanwhile, the cam drives the gear rack to slide to move, so thethird gear and the second rotating shaft are driven to rotate; the second rotating shaft drives a first stirring rod to intermittently rotate, so a mixed solution is completely mixed; a second stirring rod is stretched under the action of centrifugal force, so the effect of stirring is improved; meanwhile, the first rotating shaft drives a first magnet to rotate together with the first rotating shaft, so the first magnet i