A foldable and portable storage shelf includes two spaced apart side frames, a plurality of foldable shelf panels spacedly supported between the two side frames, and a foldable frame pivotally coupled between the two side frames to fold between an unfolded position and a folded position. At the unfolded position, the side frames are pivotally moved apart from each other to retain each of the foldable shelf panels in a horizontal manner, and at the folded position, the side frames are pivotally moved towards each other such that each of the foldable shelf panels is folded in an overlapped manner.