A pet groomer and vacuum cleaner including the pet groomer are provided. The pet groomer includes a main body (11) having a suction channel (43) to be connected with the suction hose of vacuum cleaner and has at least one air intake which transmits air to the suction channel (43)； a combing assembly which is used to comb pet hair； and a driving assembly which drives the combing assembly so as to make the comb teeth (21) in the combing assembly to move to the air intake (44) from a comb position. The pet groomer drives the combing assembly through the driving assembly so as to move pet hair which is combed from pet body to the air intake to be vacuumed away by the vacuum cleaner directly, avoiding the intermediate action of stripping off pet hair from comb teeth (21) or similar actions, so that pet hair will not fall down and environmental pollution and allergen spreading will not be caused by pet hair.
