The invention discloses a control system and method for automatically judging and eliminating coal blockage of a raw coal bunker. When the control system is arranged on the spot, a control device is connected with a charging electronic belt weigher, a belt running speed sensor, a coal plough position sensor, a 3D material scanner or continuous material level gauge in the bunker, an output end and a communication interface of an electronic belt weigher arranged in a coal weighing feeder, input ends of compression air cannons and an input end of an alarming device; when the control system is arranged in the distance, a signal collecting control box is additionally arranged on the spot to be connected with the devices and the sensors and connected with a remote control device; the control system calculates the coal quantity and the coal level in the bunker through measured data of collecting equipment and the sensors, and coal blockage is judged by comparing the coal quantity and the coal level in the bunker with the coal level and the coal quantity which are measured by the 3D material scanner or continuous material level gauge; when coal blockage occurs, the compression air cannons are controlled to be started layer by layer in batches to eliminate coal blockage; when coal blockage can not be eliminated, the alarming device is started. According to the control system and method, the automatic judging, automatic cleaning and eliminating and automatic alarming functions on coal blockage of the raw coal bunker can be achieved.