Motor assembly and scrubber

The utility model provides a motor assembly and a scrubber, and the motor assembly comprises a housing which is provided with a first through hole; the motor shaft is installed in the machine shell, and one end of the motor shaft extends out of the machine shell from the first through hole; the sealing ring is installed outside the machine shell, a second through hole is formed in the sealing ring, the end, extending out of the machine shell, of the motor shaft penetrates through the sealing ring through the second through hole, and the sealing ring is in sealing contact with the motor shaft and the machine shell so as to seal the first through hole.