Floor turnover type multifunctional propaganda display vehicle

The utility model discloses a floor turnover type multifunctional propaganda display vehicle, which comprises a vehicle body, a carriage, a floor device and an exhibition stand, the carriage is detachably connected with the vehicle body, a first capacity expansion carriage is nested outside the carriage, a second capacity expansion carriage is nested in the carriage, and the first capacity expansion carriage and the second capacity expansion carriage slide in opposite directions to realize capacity expansion; after the carriage lands through the landing device, the vehicle body is driven away; the exhibition stand is connected with the first capacity expansion compartment in a turnover mode. The vehicle body and the carriage can be separated, the landing device is arranged in the carriage, the landing device can be started to achieve landing of the carriage after the exhibition vehicle enters a field, and the vehicle body is driven away from the carriage to be independently used for exhibition. The compartmen