When the roadway drivage with thick coal seam floor, roadway roof was coal seam, to carry out such conditions using anchor net supporting the research and application of cable had the very vital significance. Took Mazhuang Mine 765 working face coal seam of Shanxi group No.7 coal seam into the wind lane as the research object, through the parameters selection and the actual test, the reasonable parameters was summed up, which had a certain popularization value.