Abstract: A loading apparatus in motor truck is described which is capable of moving loads on the truck in a rotational manner by means of a series of endless chains and wherein substantially all of the area of the truck bed is utilized without producing a dead space on the truck bed while performing loading and unloading operation. The loading apparatus is characterized in that two longitudinal tracks and a lateral track therebetween are mounted on the truck bed and each track is equipped with a unique lifting assembly. Each of the longitudinal tracks and lateral track include a pair of guide rails and a fixed load supporting member mounted there-between to the truck bed and which cooperate with its lifting assembly, such that when the guide rails are lowered by the lifting assembly, a moving load will be stabilized upon such fixed load supporting members and immobilized.