The utility model provides a large -scale fixing device for storehouse, its device main part, H -beam mounting, spool fixing clip, the locking bolt that is used for the locking device main part and lamps and lanterns jib subassembly that includes the T type, the device main part includes that two relative of setting up go up the L shaped plate and two correspondences are connected in two lower L shaped plates of last L shaped plate below, the H -beam mounting includes two sets of first sticks, first stick includes that horizontally connect goes up the vertical partial fixed plate of L shaped plate, runs through L shaped plate horizontal?component's fixing bolt and locate the fixed bolster of fixing bolt upper end perpendicularly, the spool fixing clip includes the second stick, the second stick includes the level setting and connects the cardboard of going up L shaped plate upper end, the left separation blade that reciprocates and the right separation blade of vertical setting, the locking bolt level runs through two sets of vertical parts of L shaped plate down. This device efficiency height, convenient operation, simple structure.