The utility model discloses an experimental mixed reaction unit, including mixed reaction chamber, (mixing) shaft, stirring leaf, the (mixing) shaft is in mixed reaction chamber, and the (mixing) shaft is driven by the motor and rotates, and the stirring leaf is established on the (mixing) shaft, rotates and changes characterized by along with the (mixing) shaft: mixed reaction chamber is formed by transparent organic glass board assembly, and stirring vane has last stirring vane, a lower stirring vane, and lower stirring vane blade surface base -line has with the (mixing) shaft axis and is less than 90 degrees contained angles, looks sideways at to be " V " shape, and it is perpendicular with the (mixing) shaft axis to go up stirring vane blade surface base -line, and it has the contained angle with the horizontal plane to go up the stirring vane blade surface, and upward stirring vane can reciprocate. Beneficial effect: can audio -visually reflect the turbulence condition of solution in mixed reaction chamber and mix the effect, the technological parameter's of being convenient for optimization and site operations control. Two layers of stirring to but adopt the connected mode of angle of adjustment, height with upper -layer stirring blade and agitator shaft connection mode, in the experimentation through the adjusting blade angle with highly come to investigate to mix effect, power transport and the solution turbulence condition of reacting at the mixing chamber.