The utility model provides a ring hoist mechanism is tightened in activity for tighten the ring promotion to high -order with the activity that pull rope encircleed on the tree bamboo, setting up and being used for the support activity to tighten the ring on ring carrier making it keep at a plurality of grasping mechanisms of the state of strutting and be used for promoting ring carrier's action bars including encircleing ring carrier, interval on the tree bamboo, ring carrier has and is used for the breach of side direction cover on the tree bamboo, and the activity is tightened the ring and can be grabbed by the grasping mechanism and hold and break away from the grasping mechanism behind the atress, still provides an activity and tightens ring promotion method. The utility model is simple in operation it is convenient, need not the staff and carry out high altitude construction, eliminated the potential safety hazard, can prevent to lead to because of the tree bamboo is too smooth the activity to tighten the ring and break away from landing downwards behind the grasping mechanism, reduce the operation degree of difficulty, save the activity duration.