Abstract: A multifunctional rack structure comprises a base having grooves spaced apart on the surface; a bookrack pivotally coupled to the base and having grooves spaced apart on the upper surface and two support rods on the lower surface; and a pillow rack pivotally coupled to the bookrack and having a pillow pad on the upper surface and two support rods on the lower surface. The support rods of the bookrack are inserted into one groove of the base. A book or notebook is then placed on the bookrack. Thereby, the user reads the book or operates the notebook comfortably. Alternatively, the support rods of the pillow rack are inserted into one groove of the bookrack; the user leans his head on the pillow pad to take a rest or nap. Further, the bookrack and pillow rack can be stacked to form a flat body easy to store or carry about.