The invention discloses a method for preventing a cloth bag from being burnt in the medium repair dropping charge level process of a blast furnace in a full-dry method dust removing process and belongs to the technical field of blast-furnace iron making. The method comprises the following process steps of: controlling the temperature of flue gas: controlling the work temperature of the cloth bag of a dust removing box body using a dry method to be 120-230DEG C and the limiting control temperature to be 100-250DEG C; strengthening back flushing: adjusting original normal one-time back blowing to uninterrupted back flowing; changing the original one-time ash transportation per shift into continuous ash transportation; strengthening the times for transporting and discharging ash of an operation box body by 3-6 times; sucking dust in an ash bin at any time; charging pressure and discharging ash: after gas is stopped from supplying, sweeping nitrogen gas by using a cone to charge the pressure for the dust removing box body to the work pressure being 0.16-0.20Mpa; continuously discharging ash out of the box body by using nitrogen gas instead of coal gas; and meanwhile, cooling a dust removing cloth bag to prevent the dust from being accumulated in the operation box body. The method has the advantages of reduced medium repair cost, environment friendliness and freeness from spontaneous combustion of the dust.