To provide the body structure of a long-distance night bus excellent in comfortability of passengers in the day and night, labor saving and safety of operators, and economy of bus.

This body structure of long-distance night bus is provided with a lower section 1 of which upper one side is projected steppingly which comprises a lower one side lower stage bed 4 and a lower one side upper stage bed 5 arranged along a lower passage 3 provided on one side of a longitudinal center line on a bottom part structure 2 and a lower another side lower stage bed 6 arranged along the another side of the lower passage 3 and an upper section 7 of which lower another side is projected steppingly which comprises an upper another side lower stage bed 9 arranged along an upper passage 8 provided on the other side of the longitudinal center line on the bottom part structure and an upper another side upper stage bed 11 arranged along one side S of the upper passage 8. Also the lower section 1 and upper section 7 are overlapped with each other so as to form a body of rectangular-shape.