Culture dish fixing auxiliary device for preventing culture medium from splashing

The invention relates to the technical field of microbial culture and further discloses a culture dish fixing auxiliary device for preventing a culture medium from splashing. The device includes a shell; the upper end of the shell is fixedly connected with a hold-down groove; a culture bowl is movably inserted into the hold-down groove; sliding rails are arranged in the lower end wall of the culture bowl; sliding blocks are movably inserted into the sliding rails; first movable rods are fixedly connected to the lower ends of the sliding blocks; first rotating shafts are fixedly connected to the lower ends of the first movable rods; first gears fixedly sleeve the outer sides of the first rotating shafts; second gears are engaged with the lower ends of the first gears; and second circular shafts are fixedly inserted into the second gears. By rotating a rotary knob I, a knob I drives a push rod II to move leftwards under the action of the threaded hole II; at the moment, the third movableblock pushes a pressing