Abstract: The dewatering of stope filling has a greater impact on the initial setting time of the filling body and its short-term and long-term strength.The overflow dewatering was used in Sanshandao Gold Mine by overflow tube，and penetration dewatering was used by filling retaining geotextile，but the dewatering efficiency can not meet the requirements of field work.The main influence factors of the filling dewatering rate was analyzed on the basis of theoretical research on the filling dewatering，and many improvement measures of filling dewatering are put forward.Additional vertical or inclined dewatering tubes can be used to discharge the filling gravity water more efficiently，meanwhile avoid dewatering tube clogged by the fine-sized particles in filling slurry.The improved design of filling retaining wall and selection of treatment cloth can avoid the fine-sized particles gathered near the water treatment cloth in short time which can affect penetration dewatering.The water filter of filling tube was designed to filter part of free water in filling slurry before filling the slurry into the stope area，improve concentration of filling slurry，and reduce workload of stope filling dewatering.Changing simple dewatering way to further improve the efficiency of the stope filling dewatering，can avoid from affecting the development of the next mining work.

Key words: Filling body, Dewatering of stope filling, Dewatering tube, Penetration dewatering, Strength of the filling body