The invention relates to the technical field of turnover equipment, in particular to a bar-shaped plate reversing device. The bar-shaped plate reversing device comprises a pedestal, wherein a plurality of bar-shaped loading and unloading tables are arranged on the pedestal; the loading and unloading tables are fixedly arranged on the pedestal in a diverging mode; a through plate loading hole is formed in each loading and unloading table, and the loading hole extends to the pedestal from one end, away from the pedestal, of the corresponding loading and unloading table; a cylindrical cavity usedfor buffer and a ball body are arranged in each plate loading hole; a transmission shaft for driving the pedestal to rotate is fixedly arranged on the central position of the pedestal; a plurality ofair cylinders are fixedly arranged on the transmission shaft; and a bar-shaped plate enters the corresponding plate loading hole while the bar-shaped plate is in contact with the corresponding ball body to buffer. Under rotation of the loading and unloading table, the bar-shaped plate moves to a proper position and then is pushed out by the corresponding air cylinder, so that turnover and reversing are realized. The bar-shaped plate reversing device is suitable for turnover and reversing of the bar-shaped plates, and has a buffer function.