A rocker assembly structure includes a pedestal having a base portion, and a keycap. A bottom wall of the accommodating groove protrudes upward to form a rod portion. Several portions of a peripheral surface of the rod portion are recessed inward to form a plurality of first guiding grooves. A lower portion of an inner wall of each first guiding groove is recessed inward to form a buckling slot. A front of the peripheral surface of the rod portion is further recessed inward to form a second guiding groove. The keycap covers the rod portion. Several portions of an inner wall of the keycap protrudes inward to form a plurality of buckling blocks. The plurality of the buckling blocks are disposed in the buckling slots of the plurality of the first guiding grooves and the second guiding groove.