A tire inflator includes an inner housing, a lighting assembly, an outer housing, and an air pump; the inner housing includes a chamber; the air pump is disposed in the chamber; the air pump includes an air outlet end embedded in the inner housing and extending out of the chamber; the lighting assembly is disposed in the chamber and adjacent to the air outlet end; the outer housing surrounds the inner housing to dissipate heat; the outer housing includes a through hole; the air outlet end is disposed through the through hole; and at least a part of the lighting assembly abuts against the outer housing.