Patent attributes
When a supporting frame is assembled to a seat, the child chair is used as a high chair. When the supporting frame is detached from the seat, the child chair may be served as a booster. The seat includes storages with straps connected. Each storage is covered with a cover selectively configured between a closed position and an opened position. When the supporting frame is detached from the seat, the covers may be moved to the opened position, covering coupling sections of the seat so that the supporting frame is not permitted to assemble to the seat; the straps are reachable outward the storages to secure the seat to an adult chair. When the straps are stored in the storages, the covers may be moved to the closed position, covering the storages and the coupling sections are exposed. The supporting frame is then permitted to assemble to the seat.