Abstract: In order to solve the important problem of hole-hole collapse in high-gas soft coal seam, firstly, by studying the mechanism of hole-sealing in high-gas soft coal seam, studying the fracture field and displacement of the hole-sealing section, comparing and analyzing the theory of hole-sealing by traditional drilling technique and reinforcement technique, secondly, the theory of hole-sealing with "large" wall-grouting "hole-sealing technique is put forward. Finally, in Lu'an Group Gucheng Coal Mine S1303 tape transport for the field verification of sealing technology, the experimental results show that the reinforcement technology is a good solution to the hole deformation caused by unstable gas drainage pipe difficult to send into the designated location.