A liquid storage assembly comprising a cartridge housing having a liquid storage cavity therein and a movable member rotatably provided on the cartridge housing, wherein the cartridge housing is provided with a liquid injection hole communicating with the liquid storage cavity, rotating the movable member enables the movable member to close the liquid injection hole or enables the movable member to be staggered from the liquid injection hole so as to expose the liquid injection hole; the movable member comprises a main body and a rotating shaft protruding from the main body, the rotating shaft is rotatably provided on the cartridge housing; the cartridge housing comprises an outer casing and a sealing member provided at a bottom of the outer casing, the liquid storage cavity is formed by an inner cavity of the outer casing, the liquid injection hole is provided on the sealing member, the rotating shaft is rotatably provided on the sealing member; the sealing member is recessed to form a groove, the liquid injection hole is provided on a bottom wall of the groove, the movable member is at least partially received in the groove; a side wall of the groove is provided with an abutting edge, when the movable member is rotated to cause the main body to cover the liquid injection hole, an outer peripheral wall of the main body is in contact with the abutting edge; characterized in that: the sealing member comprises a bottom base and a connecting member, the bottom base is provided at a lower end of the outer casing, the connecting member is sleeved on an outside of the bottom base and resists an inner wall of the outer casing; the groove, the liquid injection hole and the abutting edge are all provided on the bottom base, the connecting member is provided with a liquid intake hole corresponding to the liquid injection hole, a space between one end surface of the connecting member away from the liquid storage cavity and the abutting edge forms a containing groove, the movable member is at least partially received in the containing groove, the rotating shaft is rotatably provided on the connecting member. the movable member comprises a main body and a rotating shaft protruding from the main body, the rotating shaft is rotatably provided on the cartridge housing; the cartridge housing comprises an outer casing and a sealing member provided at a bottom of the outer casing, the liquid storage cavity is formed by an inner cavity of the outer casing, the liquid injection hole is provided on the sealing member, the rotating shaft is rotatably provided on the sealing member; the sealing member is recessed to form a groove, the liquid injection hole is provided on a bottom wall of the groove, the movable member is at least partially received in the groove; a side wall of the groove is provided with an abutting edge, when the movable member is rotated to cause the main body to cover the liquid injection hole, an outer peripheral wall of the main body is in contact with the abutting edge; characterized in that: the sealing member comprises a bottom base and a connecting member, the bottom base is provided at a lower end of the outer casing, the connecting member is sleeved on an outside of the bottom base and resists an inner wall of the outer casing; the groove, the liquid injection hole and the abutting edge are all provided on the bottom base, the connecting member is provided with a liquid intake hole corresponding to the liquid injection hole, a space between one end surface of the connecting member away from the liquid storage cavity and the abutting edge forms a containing groove, the movable member is at least partially received in the containing groove, the rotating shaft is rotatably provided on the connecting member.