The invention discloses a pipe bending machine. The pipe bending machine comprises a machine frame and a drive motor, wherein a working bin is arranged on the top of the machine frame and comprises a left clamping plate and a right clamping plate; the left clamping plate and the right clamping plate are longitudinally arranged; the bottom of the left clamping plate and the bottom of the right clamping plate are both fixed to the machine frame; multiple die shafts where die wheels are installed and multiple pressure wheel shafts where pressure wheels are installed are arranged inside the working bin; the die shafts and the pressure wheel shafts are parallel; the adjacent die shafts are in transmission connection; one of the die shafts is in transmission connection with the power output end of the drive motor; the pressure wheel shafts are located above the die shafts and in movable connection with the corresponding die shafts. Compared with an existing manual operation mode, one-time forming can be achieved through the pipe bending machine for pipe bending, time and labor are saved, labor intensity of workers is relieved, and the precision of formed bent pipes is high.