Abstract: A foldable paper box includes an inner panel that has an inner base wall secured to an outer base wall of an outer panel, two first inner sidewalls and two second inner sidewalls connected foldably to the inner base wall to confine a receiving space that is closed by a cover wall of the outer panel. The outer and inner base walls confine therebetween two insert slots adjacent to the first inner sidewalls. The first inner sidewalls are insertable partially into respective insert slots after being folded to extend uprightly from the inner base wall. The second inner sidewalls are inserted partially and non-removably in between the inner and outer base walls and secured to the outer base wall after being folded.

Abstract: A foldable paper box includes an inner panel that has an inner base wall secured to an outer base wall of an outer panel, two first inner sidewalls and two second inner sidewalls connected foldably to the inner base wall to confine a receiving space that is closed by a cover wall of the outer panel. The outer and inner base walls confine therebetween two insert slots adjacent to the first inner sidewalls. The first inner sidewalls are insertable partially into respective insert slots after being folded to extend uprightly from the inner base wall. The second inner sidewalls are inserted partially and non-removably in between the inner and outer base walls and secured to the outer base wall after being folded.