A toner cartridge for the use in image processing system, comprising: a rotary container body which is used to store the toner; a toner discharge port which comprises a cylinder, wherein an end of the cylinder is connected with the rotary container body and the other end of the cylinder is provided with a cap; the cylinder has a toner discharge opening; and the cap is provided with a connection component compartment which is formed by outward extension of the cap; a sealing component, which is installed inside the cylinder and is configured to open or close the toner discharge opening through its axial movement; characterized by: a driving rod which is configured to drive the sealing component for axial movement; an end of the driving rod passes through the cap into the cylinder and is connected with the sealing component; and the cap has an opening for the driving rod to pass through; a connection component which is slide-connected with the inner wall of the connection component compartment, wherein the inner wall of the connection component compartment is provided with axially extending ridges and the external periphery of the base is provided with sliding grooves which cooperate with the ridges such that the connection component compartment rotates with the connection component, and wherein the connection component has several hook-shaped projections; the side surface of the hook-shaped projections is sloped or arc-shaped; a transmission component which is slide-connected with the connection component, wherein the base has a positioning post that extends axially from the base, the transmission component has a bottom, and the bottom has a positioning opening which cooperates with the positioning post such that the connection component rotates with the transmission component; and the transmission component has at least one driving projection; wherein the driving rod of the sealing component is configured to push the sealing component to move axially inwards, which opens the toner discharge opening. a rotary container body which is used to store the toner; a toner discharge port which comprises a cylinder, wherein an end of the cylinder is connected with the rotary container body and the other end of the cylinder is provided with a cap; the cylinder has a toner discharge opening; and the cap is provided with a connection component compartment which is formed by outward extension of the cap; a sealing component, which is installed inside the cylinder and is configured to open or close the toner discharge opening through its axial movement; characterized by: a driving rod which is configured to drive the sealing component for axial movement; an end of the driving rod passes through the cap into the cylinder and is connected with the sealing component; and the cap has an opening for the driving rod to pass through; a connection component which is slide-connected with the inner wall of the connection component compartment, wherein the inner wall of the connection component compartment is provided with axially extending ridges and the external periphery of the base is provided with sliding grooves which cooperate with the ridges such that the connection component compartment rotates with the connection component, and wherein the connection component has several hook-shaped projections; the side surface of the hook-shaped projections is sloped or arc-shaped; a transmission component which is slide-connected with the connection component, wherein the base has a positioning post that extends axially from the base, the transmission component has a bottom, and the bottom has a positioning opening which cooperates with the positioning post such that the connection component rotates with the transmission component; and the transmission component has at least one driving projection; a driving rod which is configured to drive the sealing component for axial movement; an end of the driving rod passes through the cap into the cylinder and is connected with the sealing component; and the cap has an opening for the driving rod to pass through; a connection component which is slide-connected with the inner wall of the connection component compartment, wherein the inner wall of the connection component compartment is provided with axially extending ridges and the external periphery of the base is provided with sliding grooves which cooperate with the ridges such that the connection component compartment rotates with the connection component, and wherein the connection component has several hook-shaped projections; the side surface of the hook-shaped projections is sloped or arc-shaped; a transmission component which is slide-connected with the connection component, wherein the base has a positioning post that extends axially from the base, the transmission component has a bottom, and the bottom has a positioning opening which cooperates with the positioning post such that the connection component rotates with the transmission component; and the transmission component has at least one driving projection; wherein the driving rod of the sealing component is configured to push the sealing component to move axially inwards, which opens the toner discharge opening.