Abstract: On the basis of in-depth analysis of gob air leakage and spontaneous combustion laws of steep seam,the gob air leakage volume of steep seam is reduced by changing the structure of shield support,expanding the ventilation section of support mouth,using downward ventilation,decreasing sliding coal and inclined tunnel of working face and other measures,which fundamentally reduces the chance of residual coal spontaneous combustion in gob,and provides a scientific basis for the safe production of steep seam.