The utility model relates to a mixed stirring device of fermentation materials and solutions, which belongs to anaerobic fermentation equipment. A recoil rotary stirring tube and a propeller blade type propulsion stirrer are respectively and fixedly arranged at the upper end and the lower end of a stirring shaft, two material and solution outlets which are arranged at the lower side part of the recoil rotary stirring tube entirely taking a shape of Pi with reverse directions; besides, a shaft axis of the two material and solution outlets is vertical to that of a horizontal tube body of the recoil rotary stirring tube. The mixed stirring device realizes operations of stirring and mixing by utilizing the recoil acting force caused when the materials and solutions exhaust from the two reversely-arranged outlets of the recoil rotary stirring tube. The mixed stirring device has characteristics that: the structure is simple, the stirring mechanism takes up a small available fermentation volume, the power consumption is less, the damage to microbe is weak, the mixing quality of materials and solutions is good, the utilization is reliable and the application ranges are wide.