Abstract: A display supporting device comprises a supporting sleeve, a pivotable head, a first fastener, a second fastener, and a third fastener. The supporting sleeve has a circular hollow cross-section and a penetrating hole on the side wall thereof The pivotable head has a head portion and a neck portion. The neck portion has two stopping sections and is adapted to rotatably couple the supporting sleeve to enable lateral angle adjustment. The first fastener is arranged in the pivotable head for coupling a display unit. The second fastener has an attaching hole correspondingly aligns the penetrating hole, enabling horizontal rotation of the pivotable head about the second fastener. The third fastener passes through the penetrating hole of the supporting sleeve and the attaching hole of the second fastener. The horizontal rotation of the pivotable head is restricted through the contact between the stopping sections thereof and the third fastener.