Adjustable suspended shelf structure

An adjustable suspended shelf structure includes a fixed disc, a suspending rod, an adjusting mechanism and a base; wherein the suspending rod is connected to the fixed disc and its bottom is coupled with the adjusting mechanism, and the adjusting mechanism includes a sphere and a bowl-shape tray, so that the adjusting mechanism is connected to a base having a plurality of longitudinal and transversal long holes to define a suspended shelf. The fixing disc is mounted onto the ceiling, such that an object such as an overhead projector, a lamp or a speaker can be fixed onto the base to constitute a suspending status, and the angle of the object can be adjusted quickly by rotating the sphere of the adjusting mechanism around the tray.