Abstract: A dual window display box for displaying two objects includes a display arrangement and an attachment arrangement. The display arrangement includes at least two displaying frames, wherein each of the displaying frames has a displaying window and defines a storage cavity between the displaying frames when the displaying frames are overlapped with each other for the first and second objects receiving in the storage cavity. The attachment arrangement includes a first attaching member provided on one of the displaying frame and a second attaching member which is provided on another the displaying frame and is detachably attached to the first attaching member to detachably engage the displaying frames in an overlapped manner such that the display arrangement provides dual display effect on the opposed displaying windows of the displaying frames for individually displaying the first and second objects at two opposite directions.