The invention relates to a cleaning vehicle for an airport. The cleaning vehicle comprises a main body, a sewage tank, a cleaning tank, a cleaning device, a collecting pipe and four wheels, and further comprises an anti-freezing mechanism and an impurity removing mechanism, the anti-freezing mechanism comprises a heating box, a heating pipe, a reflecting plate, a rotating assembly, two supporting assemblies and two connecting pipes, and the impurity removing mechanism includes a filter screen, a pressing plate, an auxiliary assembly, two telescopic rods and two lifting assemblies. According to the cleaning vehicle for the airport, the cleaning box is heated through the anti-freezing mechanism, the probability that clear water in the cleaning box is frozen is reduced, and therefore the ground cleaning work cannot be affected, so that the equipment reliability is improved; and through the impurity removing mechanism, the function of separating sewage from impurities is achieved, the situation that the impurities block a sewage discharge pipe when the sewage is discharged is avoided, the influence on the sewage discharge work is prevented, and the equipment reliability is improved.