Side cantilever stacker is one kind of stacker reclaimer. It mainly consists of scraper conveyer, boom, position-limit mechanism, lubricating system of chain, frame, running gear, steel rail, cable trough, limit switch of travelling, power cable reel, controlling cable reel and etc. The side cantilever stacker is widely used in architectural material industry, metallurgy industry, power sector for stacking materials. The side cantilever stacker and reclaimer could work in different piles, having connection with each other. The stacker and reclaimer coordinate with each other to work in mixed stock yard. The mixed stock yard could be made up of many troughs, which could store various materials. However, each trough only stores one kind of material.