Abstract: Haishiwan main vertical shaft must pass through the rock layer that contains oil gas.In order to finish the shaft excavation safely and smoothly,after investigation and study and analyzing carefully,an overall construction scheme was adopted in which the oil gas must be explored by stage,emitted by combining special tube and shaft,and made the working face non oxygen.Then let the shaft pass through the layer that contains oil gas with small explosive cartridges and let it sunk and supported by short stage.At last,the shaft passed through the layer which contains oil gas safely and smoothly for 11 months.