The invention discloses a method and a system for predicating the collision possibility of a plurality of stackers-reclaimers in a stack yard as well as anti-collision control method and system. The method for predicating the collision possibility of the plurality of stackers-reclaimers in the stack yard comprises the following steps of: detecting the position information of a mobile station arranged in the large-machine rotary centre of each stacker-reclaimer and the large-arm head centre of the stacker-reclaimer based on a reference station; determining the minimum distance between the large arms of any two stackers-reclaimers in the plurality of stackers-reclaimers according to the detected position information of each stacker-reclaimer; and judging the collision possibility of the large arms of two stackers-reclaimers according to the minimum distance. Therefore, the invention can judge the collision possibility between the stackers-reclaimers so that operators can further process according to the possibility.