The invention belongs to the field of microbial equipment, in particular to a fermenter cleaning machine used in the field of microorganisms. The technical problem to be solved by the present invention is to provide a fermenter for the field of microbiology that can be easily operated by workers, can reduce the labor intensity of workers, can facilitate cleaning of fermenter tanks, can effectively clean the inner wall of fermenter tanks, and can clean different fermenter tanks. washing machine. A fermentation tank cleaning machine used in the field of microorganisms, including a workbench, wheels, a control mechanism, a water storage tank, an inlet, a cover, a pumping mechanism, a lifting mechanism, a water spray pipe, an angle adjustment mechanism, a cleaning mechanism, a bracket and an installation seat; the mounting seat is installed on the front and rear sides of the workbench. The invention achieves the effects of being convenient for workers to operate, reducing the labor intensity of workers, facilitating the cleaning of the fermentation tank, powerfully cleaning the inner wall of the fermentation tank, and being able to clean different fermentation tanks.