A carton structure is disclosed, which includes a side wall panel, a first end panel, a second end panel, a first lateral panel, and a second lateral panel. The first and second end panels are connected to the side wall panel, respectively. The first and second lateral panels extend outwardly from two opposite edges of the second end panel, wherein the first and second lateral panels are pressed by edges of the first end panel to abut the side wall panel such that the opening of the carton structure can be closed.