The utility model provides a dumper inversion device which includes an upper frame and lower frame of the carriage, a pair of upper frame carlings, a pair of lower frame carlings, upper penetrating beam, lower penetrating beam, turnover seat, and hinge cover. The upper penetrating beam is at the turnover place of the upper frame of the carriage, penetrating the carling of the upper frame. The turnover seat is fixed on the outside of the carling of the upper frame. The lower penetrating beam horizontally penetrates the turnover place of the lower frame of the carriage and through the carling of the lower frame. The hinge cover is fixed on the outside section of the carling of the lower frame, and the turnover seat is hinged with the hinge cover. The utility model of dumper inversion device greatly improves the stability of the truck, effectively prevents the phenomena such as carriage distortion, turning over due to uneven of the road, during the dumper lifting, thereby it is suitable for lifting heavier goods stably under the various roads conditions and prolong the service life of the truck.