Dust cup assembly and cleaning device

The dust cup assembly comprises a dust cup shell, a filter cartridge, a dust cup cover, an air outlet channel and a sealing structure, the filter cartridge is connected with the dust cup cover, the dust cup cover is detachably connected with the dust cup shell, a cavity is formed in the dust cup shell, the filter cartridge is located in the cavity, one end of the filter cartridge is connected with the dust cup cover, and the other end of the filter cartridge is connected with the air outlet channel. The other end of the filter cartridge is in butt joint with an inlet of the air outlet channel, and the sealing structure is used for sealing the filter cartridge and the air outlet channel. When the dust cup assembly needs to be cleaned, only the dust cup cover needs to be detached, the filter cartridge is separated from the dust cup shell along with the dust cup cover, the dust cup cover and the filter cartridge can be taken out together, detaching operation can be facilitated, garbage in the dust cup assembly can be cleaned conveniently, in addition, the sealing structure seals the filter cartridge and the air outlet channel, and the air leakage condition can be relieved.