The invention discloses a roller bar turning machine with the angle capable of being adjusted. The roller bar turning machine comprises a machine frame, a motor and a plurality of roller bars. The machine frame is of a fan-shaped structure. The motor is arranged at one side of the machine frame. The motor is connected with a transmission gear combination at one side of the machine frame. Gears ofthe transmission gear combination are engaged with one another. The machine frame is provided with the multiple roller bars. A roller bar and gear combination is arranged at one ends of the roller bars, and the transmission gear combination and the roller bar and gear combination are in transmission connection. A roller combination is arranged at the other side of the machine frame. The other endsof the roller bars are installed between the roller bar and gear combination and the roller combination, and gear centers are arranged in the middle parts of the gears of the transmission gear combination, and gear grooves are formed in the left side and the right side of each gear center. The left side and the right side of each gear center are each provided with a gear blade. The upper side andthe lower side of each gear blade are each provided with a fixing device. The number of the gear grooves of each gear center is four, and adjustment can be made between 30 degrees and 90 degrees.