The present invention relates to a blowing or re-blowing process of a blast furnace, and blast furnace equipment for same. The present invention relates to a blowing or re-blowing process of a blast furnace, the process including the blast furnace and a gas purification section for purifying gas from the blast furnace, and provides a blowing or re-blowing process of a blast furnace, and blast furnace equipment for same, which: close a breather valve, and purge nitrogen and steam from a blast furnace and a gas purification section to generate, toward a clean gas vent line provided at the downstream side of the gas purification section, a flow of air remaining in an uptake, a downcomer and a clean gas transport line of the blast furnace; purify, into a clean gas state through the gas purification section, blast furnace gas generated by the operation or re-operation of the blast furnace, so as to discharge same through the clean gas vent line; and open a clean gas cut-off valve for clean gas transported to a gas holder through the clean gas transport line and close the clean gas vent line, if the pressure of the clean gas transport line exceeds the pressure of the gas holder while the clean gas is discharged through the clean gas vent line.