The present disclosure discloses a display panel turnover device. The display panel turnover device includes: a holder comprising two inverted-V shaped supports arranged oppositely and a rotating shaft pivotally assembled on top ends of the two inverted-V shaped supports, wherein each inverted-V shaped support comprises a front leg and a rear leg; an adjustment lever having a first operating position and a second operating position, located between two front legs and two rear legs and substantially parallel to the rotating shaft; a frame configured to retain a periphery of a display panel therein, wherein a top of the frame is secured to the rotating shaft, and a bottom of the frame is secured to the adjustment lever; and a front door and a rear door respectively arranged at a front side and a rear side of the frame and capable of being opened and closed.