Developing cartridge

The utility model provides a developing box and relates to the technical field of electronic imaging devices. The developing box comprises a box body, at least one stirring frame, a second stirring frame, a transmission assembly, a power receiving part and a plurality of clutch parts, the box body is provided with a first powder cavity and a second powder cavity, the stirring frame can transfer a developing agent in the second powder cavity into the first powder cavity, and when the driving assembly provides driving force in the second rotating direction, the driving assembly drives the first powder cavity to rotate. The at least one clutch piece is connected with the driving assembly, so that the clutch piece drives the stirring frame through the transmission assembly to transfer the developer in the second powder cavity into the first powder cavity, the developer capacity of the box body is increased through the second powder cavity, and the developer in the second powder cavity can be transferred into the