The invention discloses an automatic plate clearing system, which is used for clearing spinning nozzles on chemical fiber equipment and preventing a spinning hole from being blocked. The spinning nozzles are arranged in lines and rows on the chemical fiber equipment, and multiple pieces of chemical fiber equipment are distributed in lines and columns. The automatic plate clearing system comprises a plate clearing robot, a traveling system, a traveling track, a navigation system, a positioning system, a calling control system, a power collection system, a background control system and the like. The invention also discloses an automatic plate clearing process. By adopting the automatic plate clearing system and the automatic plate clearing process, the manual intervention can be maximally reduced, and the clearing of the chemical fiber equipment can be automatically completed; and in the operation process, the automatic navigation and autonomous power supply as well as precise positioning of the spinning nozzles can be realized, a scraper head is accurately sent to the position of each spinning nozzle, and the collision or friction between each scraper head and the chemical fiber equipment is prevented. The process is simple, the precision is high, the positioning speed is high, and the production efficiency is high.