Based on the characteristics of supporting design of road driving along next goaf, the reasonable design of coal pillar width of returning air lane 21128 in the Bottom Tree Mine was 7 m. The drilling strata structure detection technology was adopted to detect the surrounding rock loose condition, the influence circle of roadway loose was determined around 2.2 m, which it provided the practical basis of determination of supporting method and parameters optimization of support, and proposed the beam and metal net supporting scheme as well. The results show that the deformation of roadway surrounding rock in the range of allowable safety production, roof abscission layer of is small, and roadway surrounding rock is effectively controlled.