A multistage band transportation multi-touch-screen multi-CAN-board parallel long-distance centralized control device for a coal washery comprises a multistage band-type transportation monitoring device for a coal washery. Multiple touch screens are connected in parallel with the CAN boards, and then are connected to a PLC serial port by means of RS 485 serial port lines. A band-type brake detection switch and a contact feedback detection switch of a main contactor are connected to input / output endpoints of the PLC; in a case in which secondary machines encounter communication faults, the faults can be found in time. The device has protection functions for a band-type brake, smoke, coal stacking, skidding, a motor temperature, a front roller temperature, a rear roller temperature, a front sideslip, a middle sideslip and a rear sideslip, and can carry out disabling / enabling setting in the touch screens; currents, voltages and powers are displayed in the touch screens, a multi-touch-screen multi-CAN-board long-distance monitoring function can be implemented, the device is suitable for processing multiple pieces of data, the data transmission is fast, the signal attenuation is small, and the anti-interference capability is high, the functions are complete, and the performance is reliable.