The utility model provides a feeder of fermentation usefulness, by the motor, the axle, the stirring rake, bucket, first pipe, pump, second pipe, joint, stirring rake pass through the screw connection in epaxial, a pipe welding in the bottom of bucket, the pump passes through flange joint with first pipe and second pipe, and second pipe and joint pass through flange joint. The utility model discloses a mode feeding of the feeding while stirring makes the suspension of insoluble solid in liquid through the stirring for feeding liquid is even. The utility model relates to a rationally, easy operation, the practicality is strong, can be suitable for various liquid feedings, is particularly useful for containing the liquid feeding of infusibility solid. The staving of open -type makes things convenient for liquid material's allotment, and the stirring of cooperation motor makes the material mixed phase to evenly, some feeders such as solid conveyer belt feeder, solid screw feeding ware, vacuum feeder relatively at present, the utility model discloses the device more is fit for transmission liquid material, and the structure is more simple.