The present invention provides a package box of liquid crystal glass, which includes a box body, a plurality of mounting sections arranged in the box body, and cushioning devices mounted to the mounting sections. The cushioning devices each include a cushioning section, a retention section connected to the cushioning section, and a projection. The mounting sections each include a first receiving channel and a through hole respectively corresponding to the retention section and the projection of the respective cushioning device. The retention sections are respectively received in the first receiving channels and the projections are respectively fit into the through hole so as to fix the cushioning devices inside the box body. The package box uses cushioning devices that are mounted inside a box in a snap-fitting manner so that the operation of assembling and disassembling the cushioning devices is simple, making it easy to re-work.