The invention relates to the field of garbage conveying devices, in particular to an adjustable conveying device for conveying garbage, loading and incinerating, which comprises a base, a moving mechanism, a conveying mechanism, a tensioning mechanism, a cleaning mechanism and an angle mechanism, the base can be conveniently moved through the arrangement of the moving mechanism, so that the conveying device can be conveniently moved to an occasion where the conveying device needs to be used, garbage is continuously conveyed to a position where the garbage needs to be reached through the arrangement of the conveying mechanism, and a conveying part for conveying the garbage is conveniently tensioned through the arrangement of the tensioning mechanism; the cleaning mechanism is arranged to clean the passing conveying part, so that the conveying effect of the conveying part is prevented from being affected by water stains and the like in the garbage, and the conveying part is ensured to be always in the optimal working state; the horizontal height and the end height of the conveying mechanism are convenient to adjust through the arrangement of the conveying mechanism, so that the end of the conveying mechanism can be located at any height according to field use requirements.