A double-side display device and a fixing structure of a backlight module of the same. The fixing structure includes: a first fixing part, a second fixing part, and a third fixing part, wherein the first fixing part includes a first main body portion, a first carrying portion and a first connection portion formed integrally; the second fixing part includes a second connection portion and a second carrying portion formed integrally, the second connection portion is detachably connected with the first connection portion; and the third fixing part includes a third main body portion, a third carrying portion and a third connection portion formed integrally, wherein the third connection portion is used for fixing and connecting with the first fixing part. The fixing structure for the backlight module realize the fixing to the backlight module through multiple fixing parts which is simple in structure, and the assembly process is simple.