The use of plastic corrugated pipe with dewatering holes and wrapped filler cloth is an effective method for the debatering of cemented tailing fill slurry in high stope. As simulated dewatering tests were conducted on surface, it was determined to select 9mm dewatering holes arranged in plum blossom shape and 100 mesh nylon filter cloth for stope fill dewatering after the comparison of various mesh parameters of dewatering holes and the dewatering perfotmance of 11 sorts of filter cloth.