The invention relates to a teat cup cleaning unit comprising a distribution unit which has an inlet (4) and at least two outlets (5) for a cleaning liquid. The distribution unit has a calming chamber (6) and a distribution chamber (7). The calming chamber (6) is connected to the distribution chamber (7) via an opening (8). The inlet (4) opens into the calming chamber (6). A cleaning liquid leaves the distribution chamber (7) through the passages (9) leading to the outlets (5).