The layout of No.11218 Face in Xingdong Mine was wide inside and narrow outside. In order to recover more coal resources and reduce the influence of various factors on coal discharge time, a set of new support adding technology in line with the actual situation on site was innovated and successfully applied. In order to realize the two-way transportation of the rear scraper conveyor, the transition groove was installed at the tail of the conveyor to replace the fixed section of the ordinary tail. At the same time, through the construction technology of the new recovery coal pillar such as the expansion of the side, 7 657 tons of coal resources were recovered in the No.11218 Face, and the coal income was increased by more than 6 million yuan, which had achieved good economic and social benefits.