A cleaning device for cleaning a connecting aluminum plate for automobile battery integration and cleaning process thereof, the cleaning device is disposed in a dust-free workshop, which comprises a transfer mechanism which successively transfers the connecting aluminum plate to different workshops; the workshops successively comprise three cleaning workshops, five rinsing workshops, a preheating workshop, a vacuum drying workshop, a baking and sterilizing workshop and an inspection and packaging workshop. The present invention can clean connecting aluminum plate in a pipelined manner and consume less energy, and by which the dyne level of the surface tension of the cleaned products can accord with the packaging requirement.