The invention provides a kettle cleaning device for lubricating grease production. The kettle cleaning device comprises a kettle body, wherein a grease heating device is arranged on the outer wall ofthe kettle body, a feeding port is formed in the upper end of the kettle body, and a return pipe is arranged at one end of the feeding port. Two high-pressure spray guns are built in the kettle body and are provided with spray ports. Rotary shafts are arranged at the top ends of the high-pressure spray guns, and a speed regulating motor is arranged at the connected position of the top ends of therotary shafts. A discharging port is formed in the bottom end of the kettle body, a filter screen is arranged at the bottom end of the discharging port, one end of the filter screen is connected withthe return pipe, and a lifting pump is arranged at the bottom end of the return pipe. A collecting pipe is arranged at the other end of the filter screen, and a waste liquid box is arranged at the bottom end of the collecting pipe. The kettle cleaning device has the advantages that grease is secondarily heated by utilizing a grease heating technology and is directly cleaned by utilizing the high-pressure spray guns without cooling conditions. The design of the high-pressure spray guns makes the cleaning efficiency higher, and space is saved.