Display cabinet and display cabinet assembly

The invention provides a display cabinet and a display cabinet assembly. The display cabinet comprises a hollow lamp box body, a transparent display panel and a rotary mechanism. An opening is formed in a wall surface of the lamp box body; the transparent display panel is mounted at the opening of the lamp box body; the rotary mechanism is positioned in the lamp box body and is mounted on the lamp box body. The display cabinet and the display cabinet assembly have the advantages that the display cabinet is easy and convenient to operate, displayed contents in the lamp box body can be quickly replaced, accordingly, the purpose of quickly replacing displayed advertisements can be achieved, the display cabinet and the display cabinet assembly are obvious in practicality, and the display cabinet is convenient to popularize.